Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Change all your passwords everywhere
Use something like KeePass to generate long random ones for each service.
Don't forget to go to Database Settings, Security, hit the "1 second delay" link or button, and then increase it - taking 3 or 4 or 7 seconds to open KeePass is a small price to pay for making attackers have to work incredibly much harder than the defaults.
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.
Set up Teamviewer Two Factor Authentication, which uses the TOTP protocol (time based one time passwords); RFC6238RFC6238.
Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Change all your passwords everywhere
Use something like KeePass to generate long random ones for each service.
Don't forget to go to Database Settings, Security, hit the "1 second delay" link or button, and then increase it - taking 3 or 4 or 7 seconds to open KeePass is a small price to pay for making attackers have to work incredibly much harder than the defaults.
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.
Set up Teamviewer Two Factor Authentication, which uses the TOTP protocol (time based one time passwords); RFC6238.
Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Change all your passwords everywhere
Use something like KeePass to generate long random ones for each service.
Don't forget to go to Database Settings, Security, hit the "1 second delay" link or button, and then increase it - taking 3 or 4 or 7 seconds to open KeePass is a small price to pay for making attackers have to work incredibly much harder than the defaults.
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.
Set up Teamviewer Two Factor Authentication, which uses the TOTP protocol (time based one time passwords); RFC6238.
Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Change all your passwords everywhere
Use something like KeePass to generate long random ones for each service.
Don't forget to go to Database Settings, Security, hit the "1 second delay" link or button, and then increase it - taking 3 or 4 or 7 seconds to open KeePass is a small price to pay for making attackers have to work incredibly much harder than the defaults.
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.
Set up Teamviewer Two Factor Authentication, which uses the TOTP protocol (time based one time passwords); RFC6238.
Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Change all your passwords everywhere
Use something like KeePass to generate long random ones for each service.
Don't forget to go to Database Settings, Security, hit the "1 second delay" link or button, and then increase it - taking 3 or 4 or 7 seconds to open KeePass is a small price to pay for making attackers have to work incredibly much harder than the defaults.
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.
Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Change all your passwords everywhere
Use something like KeePass to generate long random ones for each service.
Don't forget to go to Database Settings, Security, hit the "1 second delay" link or button, and then increase it - taking 3 or 4 or 7 seconds to open KeePass is a small price to pay for making attackers have to work incredibly much harder than the defaults.
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.
Set up Teamviewer Two Factor Authentication, which uses the TOTP protocol (time based one time passwords); RFC6238.
Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Change all your passwords everywhere
Use something like KeePass to generate long random ones for each service.
Don't forget to go to Database Settings, Security, hit the "1 second delay" link or button, and then increase it - taking 3 or 4 or 7 seconds to open KeePass is a small price to pay for making attackers have to work incredibly much harder than the defaults.
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.
Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.
Unplug your router from the Internet in addition to your PC:
Buy a new one
Or give it a hard reset, and use a non-compromised machine on another network to download any firmware updates for it. If there aren't any because it's old... see "Buy a new one"
If they were able to use a computer inside your LAN, they were able to try and, or successfully, log into your router
Also check to see if your router has one of many vulnerabilities; if so, see "Buy a new one"
Consider a serious router/firewall, like running pfSense free software on an old machine with 2 NICs, or their own devices, or a fitlet tiny fanless PC, or whatever.
- Then install the Snort or Suricata package - those are IDS/IPS packages which have a chance of noticing attacks in progress and optionally blocking IPs for a period of time - in your case, I'd say block for a few days and watch your logs very carefully for them to try and get back in.
Or at least a Ubiquiti Edgerouter Lite - much cheaper, but very limited in the GUI (all the really advanced stuff is in the command line, and it's definitely not for running an IDS/IPS).
Change all your passwords everywhere
Use something like KeePass to generate long random ones for each service.
Don't forget to go to Database Settings, Security, hit the "1 second delay" link or button, and then increase it - taking 3 or 4 or 7 seconds to open KeePass is a small price to pay for making attackers have to work incredibly much harder than the defaults.
Keep your computer off (in case of ransomware, possibly on a time) and unplugged while you:
Buy a new hard drive
Plug in power but NOT networking (and especially not Wifi; physically remove/turn off all wifi)
Install Windows from scratch
Install your AV package with an offline installer downloaded on a noncompromised computer and network
Run Windows patches offline possibly by using WSUS Offline Update from that noncompromised computer and network
Purchase a sledgehammer, a box of gallon Ziplock bags, and a small kitchen towel.
Wrap the compromised hard drive in the small kitchen towel
Put the wrapped HD in at least 6 Ziplock bags, each sealed
Smash the drive with the sledgehammer until glass shards are leaking through the towel
Restore your valuable data from existing backups
Or, much riskier if you don't replaced the compromised HD: run several different offline, bootable/live/livecd/rescue antivirus/antimalware/antirootkit products
- Regardless, do these offline scans for all other machines on your network! - Use several because no one product covers everything, but by using several different products, you reduce the uncovered space significantly. I'd recommend: - at least one of AVG and Avira (or both) - at least one of Dr. Web and Kapersky (preferably both), to get some Russian involvement. - Comodo Rescue Disk (it advertises rootkit scanning, too) - Pick another couple of your favorites.PCSupport.about.com has a pretty good top 15 list as of Feb 2016
If you're truly worried, do this on every machine on the network.
- It won't really take much more time - you can put AVG in one, Avira in another, Kapersky in a third, Dr.Web in a fourth, and then simply move them to the machine on the right when they're done in round-robin fashion.
They're almost certainly going to find tracking cookies - that's normal, and nothing to be concerned about, though I'd always delete them.