Questions tagged [system-compromise]
Dealing with a system compromise: your defenses failed, now what?
150
questions
1
vote
0
answers
67
views
Different types of USB charger attacks that work on Android phones
I'm wondering about different types of malicious USB charger attacks that work on Android devices when USB debugging option is disabled and if the USB option is set to "charge only".
I'm not ...
1
vote
1
answer
120
views
What "indicators of compromise" are there that end users can diagnose themselves?
I'm responsible for the IT security of a small (~5 users) office, and I'm preparing training materials for our users.
Obviously, the first step my users should do if anything seems suspicious is to ...
- 3,026
2
votes
1
answer
540
views
Windows Update installs yandex.ru browser hijacker
I recently created a Windows 10 installation stick via the official media creation tool. Presumably, there was no malware on my host system on which I created the stick. It's a pretty fresh install as ...
0
votes
0
answers
34
views
RBAC for system to system access
An organisations has multiple service tiers. One of the services in a core tier exposes APIs to the tier above. The core tier services do RBAC, consequently an end customer token is required in order ...
- 121
2
votes
1
answer
124
views
Is it possible for a hostname lookup to be temporarily lying (wrong ISP)?
In 2017, I was running a local website on my own dedicated server in a professional data center. FreeBSD. Installed by me remotely. Maintained carefully by me. No other human users than myself. I was ...
- 21
1
vote
0
answers
68
views
How can I get & keep an unauthorized user out of my network? [closed]
I have replaced hardware, equipment, and passwords. I think they are in Yahoo, Microsoft, phone, and laptop. I have changed all with no success. They use my identity as the temporary ID from Microsoft ...
0
votes
1
answer
428
views
Can VPN protect me against MITM attacks if my device is already compromised by having a malicious root certificate installed?
Let's say my device is already compromised without my knowledge by my ISP, it has a malicious root certificate installed which allows my ISP to view all of my HTTPS traffic as plain text.
now if I use ...
user285140
0
votes
0
answers
101
views
How to fix deceptive site ahead warning on a wordpress site
I have an issue with my website, when visitors try to access it shows the deceptive site ahead warning I used google search console to try to fix it (as I successfully did it previously with some ...
- 103
0
votes
1
answer
140
views
OS on external drive -- is it safe?
So I'm installing macOS to my external hard drive partition, so I can have a 100% clean environment where I can engage with cryptocurrencies. (Exchanges, stable coins, protocols, putting actual money ...
0
votes
0
answers
65
views
Compromised machine. Should I create a partition or volume to install a clean OS?
My goal is to create a 100% clean environment where I can interact with cryptocurrencies. For that, I can partition my disk or I can create a volume. Which one should I prefer?
Some context about the ...
-2
votes
1
answer
1k
views
How can this Jim Browning YouTuber have access to so many scammers' computers/networks?
I'm frankly sick of these videos, and the only interesting part to me has nothing to do with the scam or the content of the video, but simply the fact that he is apparently somehow able to see exactly ...
6
votes
3
answers
5k
views
Friend's Instagram account repeatedly hacked despite changing all information and enabling 2FA
My friends Instagram account has repeatedly been hacked. Someone is gaining access to her account, proceeding to change all the security information to lock her out. Then posts scam ads on her account....
- 61
1
vote
1
answer
129
views
Ability of an infected UEFI bios to store data on computer
Suppose the UEFI BIOS is infected. The storage device is encrypted, there is no network access to the system, and RAM is encrypted. Is there any writable storage that an infected UEFI can write to ...
- 35
0
votes
1
answer
299
views
Will secure boot prevent any non signed firmware from running?
Wonder if secure boot can protect my computer from usb drives with infected firmware after Debian os is booted ?
- 3
0
votes
1
answer
439
views
Hacked list of AD logins and passwords
An organization my friend works for was recently hacked, and the hackers published a file with over 100,000 names and passwords, including theirs. An IT person in the organization told me that the ...
- 101
1
vote
1
answer
367
views
Why am I seeing this in /var/log? [closed]
I've noticed a lot of weird logs in /var/log on my server.
For example:
cd /var/log/DIST00000001ARGC00000005ARGV00000002ccARGV00000002-cARGV00000006nmap.cARGV00000002-oARGV00000006nmap.oDOTI00000000
...
- 111
1
vote
2
answers
271
views
Email server compromise?
My company sends around 1M emails per month through various providers (Sendgrid etc.). One of emails we send is a "sign up" email, which contains a link for a user to finish registering ...
- 111
1
vote
1
answer
100
views
Is it called Drive-by Compromise if attacker provided his website for user to access?
If the website is legitimate and the attacker exploited that legitimate website, and the attacker gains access to a victim's system that visits the website, then it is a drive-by compromise.
However, ...
- 11
1
vote
0
answers
431
views
Spawning child processes from root using runuser command
I am working as an intern for an online coding platform startup (similar to LeetCode or HackerRank).
The backend is written in Nodejs. Instead of running the code in a sandbox of some sort, the lead ...
- 113
0
votes
1
answer
154
views
Database password encryption compromised
A company has a database with user's passwords encrypted. An attacker compromised the password encryption now it needs to be changed.
In this situation does the company needs to change the encryption ...
- 319
1
vote
0
answers
195
views
How can this "Jim Browning" YouTuber have access to all these scammers' PCs? [closed]
I've been watching these videos on YouTube about some British-sounding male (with millions of views) busting Indian scammers.
It is never explained how exactly he is able to do this, with him ...
- 11
1
vote
0
answers
359
views
How did SolarWinds get hacked? And was the Orion update put out without human approval? [closed]
Obviously there is massive information about the SolarWinds Orion hack itself of the malicious DLL injected into the update: https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-...
- 121
11
votes
1
answer
503
views
SolarWinds Orion SAML compromise mass cert update
SolarWinds Orion customers have suffered some network compromises according to news reports.
One report says, right at the end of the article, that SAML2.0 signing certificates may have been ...
- 379
1
vote
1
answer
198
views
MacOS's Finder (and Xcode) accessing iDevices while network was off
I am trying to figure out what is wrong with my Mac.
Here are my devices:
iPad (7th generation, MW752LL/A) with iOS 14.01 (18A393),
iPad Air (MD788LL/A) with iOS 12.4.8 (16G201),
iPhone 6 Plus (...
- 11
0
votes
2
answers
539
views
How do you find an attacker if he immediately cleans after himself?
Having an Ubuntu server with current software, updated daily, every 5 days or so someone gains root access. I know that from log watch.
I search the logs for his ip and it doesn't show up.
He is ...
3
votes
4
answers
262
views
How do I minimize the number of passwords leaked when a PC gets compromized?
For customer support reasons, we need to store passwords to some of our customers' systems (with their explicit, written permission, of course), as well as, obviously, passwords to some of our own ...
- 3,026
1
vote
0
answers
100
views
Strange Proxy Application Behavior on iOS 13.5.1
Background: My buddy is a freelance journalist working on a story on one of the bigger software companies (a household name, starts with an A). Anyway, he asked me to take a look at his iPad because ...
- 11
0
votes
1
answer
121
views
How do maintainers calculate x number of accounts compromised by hack? [closed]
I am always curious by reports in the news of big network sites getting hacked and the report confidently stating a statistic such as "only 10,000 users were affected" or "Microsoft confirms 40,000 ...
- 101
1
vote
0
answers
137
views
I've nuked it from orbit, now what?
Last night I was checking my router because I noticed some sluggishness with my connection. I opened a connections monitor and saw my computer was sending significant UDP traffic to an IP address on ...
- 152
-1
votes
3
answers
255
views
DDoS: calculating server threshold for requests
There's a question on infosec stack exchange here that is similar but not the same as what I want to know:
Threshold for DDOS Attack
I want to know how to calculate the amount of requests, and/or ...
- 11
1
vote
2
answers
216
views
Compromise of a Public JS Library
I was listening to a podcast about cybersecurity, and I heard that a public JavaScript library was compromised by attackers who injected a credit card scraper into the library, and then every site ...
- 41
0
votes
0
answers
32
views
Wordpress m4shell Hack [duplicate]
I could not find any similar error after searching the web and struggling with the problem for around two weeks.
One of the Wordpress sites I'm managing keeps getting hacked. There has been no ...
1
vote
0
answers
186
views
Help in understnading HIDS OSSEC traces
I realized my system Ubuntu and windows dual boot might have been compromised. So, I installed OSSEC HIDS to try to look for issues.
When I ran dmesg, i found the following trace:
------------[ cut ...
- 111
0
votes
0
answers
186
views
Logged in with a hacker's email address
I have an active account at ebay-kleinanzeigen.de (like Craigslist in the US).
Today I got a valid email from them that my email address was changed.
On my mac, I opened up my ebay-kleinanzeigen ...
- 101
0
votes
0
answers
127
views
What authentication systems have been involved in data breaches?
Recently, a Federal Judge ordered Marriott to reveal the forensics report for its data breach. I know the Courts have sided with businesses in the past to keep the forensic details of breaches from ...
- 41
0
votes
0
answers
143
views
What should I do next on my GPG key after my computer is seized by authority?
Unfortunately, although my keys are protected by password, I am afraid it is not strong enough. I assume I lost control of all my private keys now. I still have backup of my private keys, what I want ...
- 111
0
votes
2
answers
202
views
Differences between compromised shared hosting and dedicated/virtual hosting
My webspace has been compromised as explained on this answered question. While looking for advice on other q&a it seems to me in the answers it is assumed the compromised system is a full ...
- 123
13
votes
3
answers
4k
views
Would encrypting a database protect against a compromised admin account?
I was discussing with someone ways to prevent data disclosure from a compromised admin account on a database server. The other person proposed encrypting the data at rest within the database. It ...
- 494
-1
votes
1
answer
529
views
Received ransom email containing my password. How did they get my password?
Finally, even I got the fabled ransomware emails we've all heard about so much.
First, let's look at the facts before I get to my question:
I use Mozilla Thunderbird as my email client.
I was ...
- 423
8
votes
6
answers
979
views
I am a political activist, its likely that my computer will be compromised in the future, how can I secure my data?
I have sensitive data to secure. My computer may likely be compromised physically in the future. How can I secure my date from various attacks like Evil Maid attacks and so forth. I have some basic ...
- 81
0
votes
2
answers
1k
views
How to verify a private key has not been compromised?
I have a machine with a process that signs code for users running 24/7 (encrypting the key is not possible), which will be protected as well as possible. Is there a way to set things up such that I ...
- 123
0
votes
1
answer
192
views
What are the security implications if systemd is not restarted after it has been updated?
My understanding is that systemd is the parent process for all other processes running on Linux.
If systemd has been updated on production devices such as servers and the service is not restarted, ...
- 1,513
3
votes
1
answer
490
views
Decrypting possibly compromised Veracrypt hard drive
I have a Veracrypt encrypted hard drive, a system drive encryption with the operating system.
The laptop is possibly compromised, which is why I can't decrypt it directly on the laptop. I don't know ...
- 31
0
votes
0
answers
52
views
IBM warns to move data out of insecure encryption schemes, but where to? [duplicate]
I'm currently using GnuPG (RSA 4096), Encryption-based DLP, SSL, SSL-VPN, Password Manager and other apps considered insecure by the IBM research team, who favor Lattice encryption over the standard ...
5
votes
1
answer
731
views
How was IronChat compromised?
How was IronChat compromised?
https://hotforsecurity.bitdefender.com/blog/police-crack-encrypted-chat-service-ironchat-and-read-258000-messages-from-suspected-criminals-20530.html
Dutch police have ...
- 1,758
-1
votes
1
answer
202
views
Are kernel mode drivers harder to compromise? [closed]
Of course the effects of a compromised kernel mode driver are more disastrous, but are they harder to compromise in the first place?
0
votes
2
answers
287
views
Best Source of Security Configuration Guidance
Over the years I have used a number of different sources of security configuration guidance for a spectrum of systems including for example:
https://www.cisecurity.org/cis-benchmarks/
https://www....
- 113
-1
votes
2
answers
216
views
Is it a good idea to have a new laptop just to generate 2FA keys?
I am very concerned about people putting keyloggers or trojans on my computer. That can happen because I use my computers for many things. Work. Playing games. Watching movies. Accessing many ...
- 139
3
votes
2
answers
418
views
Server protection measures from authorities
I am on a project which is illegal in my nation but is not illegal anywhere in the world. In order not to get a 100yr sentence I should be prepared for seizures and forensics.
I am running a server ...
- 31
2
votes
1
answer
367
views
Port Knock logs suggest machine has been compromised?
On my CentOS machine, all my ports are filtered with the Iptables rule:
DROP all -- * * 0.0.0.0/0 0.0.0.0/0
So from the Internet, every port timeouts.
The only way to ...
- 81