Questions tagged [isp]

Questions about the security of ISPs (Internet Service Providers), ISP managed devices, ISP communications etc.

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If software use encryption to protect one from ISP providers and other parties from snooping, how does this apply to browser software, esp. on mobile?

I believe the title says it all. As an example, let's say I use the Brave browser on a phone. From my understanding, all legitimate apps or computer software that connect to the Internet have some ...
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Do I have to trust International Esim Providers?

I'm referring to international Esim providers like Keepgo and BNESIM. Those provide data only, i.e. you don't get a phone number and can't make calls/SMS (at least the options I'm interested in). ...
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1 answer
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Can I brute force a telecom APN? [closed]

I'm currently curious about how an APN is verified in the telecom software. If there are multiple APN that are left unused since long time (like private apn and corporate ones), is it possible to ...
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1 vote
1 answer
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What are the best ways to block ISP from spying on you

My dad keeps trying to log everything I do with the WiFi, I've gotten a VPN and use HTTPS everywhere, But I'm not completely sure it worked. Is there any other good things to use? Or is this enough, I'...
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2 answers
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Can my ISP know that I am using Tor if I am connecting to Tor via an SSH SOCKS5 proxy?

I created an SSH SOCKS tunnel that forwards connections from a local port to a remote server: ssh -N -D 127.0.0.1:1234 me@example.com (i.e. all connections to 127.0.0.1:1234 get forwarded to the ...
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2 votes
1 answer
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Can my ISP know that I have more than one Google Drive account?

So, I have 2 Google Drive accounts. Let's say Drive A and Drive B. If one day I login/upload to Drive A then log out, then login/upload to Drive B, can they notice that I have 2 different accounts? Or ...
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How to stop a DDoS attack that brought down my ISP

I'm streamer and I guess I'm good target for DDOS'ers. Those bad people know my ISP (but they don't know my IP address - ISP changed that for me when the first attack happened). It's a small local ISP ...
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1 answer
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My ISP seems to be intercepting my DNS requests even though my router is set to use Cloudflare [duplicate]

I am using an Indian ISP, one that is notorious for DNS hijacking and script injection (BSNL). I have my router set to use Cloudflare's Family DNS. But despite this, every time I attempt to access a ...
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1 answer
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How to handle a router from an apparently security-indifferent ISP with no possibility to switch?

My ISP's security strikes me as... somewhat alarming to my admittedly non-expert eyes. They store wifi passwords in plaintext on their website and allow changing it there - this is apparently meant to ...
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How to understand risk of a hosting ISP private network?

I am trying to understand the security concerns related to using the private network provided by my hosting ISPs. The ISPs offer a private network feature that only my VPS instances are connected to. ...
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3 answers
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Can my IP address be tracked from an Instagram DM?

Could someone be able to find my IP address and where my ISP is located from an anonymous DM on Instagram? (I am planning to instantly deactivate the account after sending the message if that matters.)...
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MITM attack on public wi-fi and ISP wired connection [duplicate]

I know how MITM attacks work (theory/videos on the subject etc), but I am a bit confused and not sure what are the worst-case scenarios that can happen. If I'm using a public VPN and someone is indeed ...
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What are the benefits of using a Cloudflare's DNS (not WARP) instead of ISP's DNS? [duplicate]

What advantages users get, specifically, from 'PRIVACY' point-of-view? Can ISP still see and log browsing history? Can user's location be still traceable? What's the ultimate security & privacy ...
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Does my ISP have a clue about what type of activity I'm doing on WhatsApp/Viber/Telegram?

Can my ISP see the difference between sending messages, making video call, and simply engaging with communities - building on traffic types?
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2 votes
2 answers
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Why are I and other users of my ISP being used as a proxy server?

I recently noticed a huge amount of downloads made through my IP (iknowwhatyoudownload.com). On the website abuseipdb.com, I discovered some reports of abusive behavior. So I started an investigation ...
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1 answer
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If my home router password was reset, is that a sign of a security breach?

Recently I started having issues with my home Wi-fi connection. My devices showed as connected to the router, but no Internet was coming through. While trying to log into the router through my browser ...
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my ip address comes out from a different ISP/Country

I noticed suddenly something weird on my PC. I am currently in Italy, Google all of a sudden is displayed in Arabic, and my IP is from an ISP in Czech Republic, and it is obviously different from the ...
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1 answer
106 views

Will ISP know the location of public comment on Facebook via query link? [duplicate]

Let say that a person has made a comment on a Facebook group and in the browser address bar it will have a link with the following format. If someone clicked on this link, it will jump straight to the ...
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17 votes
2 answers
3k views

Can my ISP see which VPN protocol I am using?

I know that my ISP can detect when I am using a VPN, but can it see which protocol I am using?
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4 answers
269 views

How can I safeguard myself if share the same router with the people living in my apartment

I share the same wireless router with some other people living in the same apartment. I want to safeguard my privacy and also not be held liable for their internet activity. The modem from the ISP ...
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15 votes
3 answers
3k views

Can two locations in the same city at the same time have the same IP adress? [closed]

I got a notice due to vandalism in Wikipedia and the perpetrator is someone with the same IP as mine. I looked up the notice and it seems that the vandalism happened last year and the person behind it ...
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1 vote
1 answer
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Can my ISP see documents I print trough my wireless network printer that is connected to ISP-provided router?

As stated in title - I am wondering if connecting my printer to ISP-provided router could expose all of my printed data to his eyes? Cheers!
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5 votes
0 answers
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How is my ISP circumventing SSL on thepiratebay even though the certificate is valid?

When I visit https://thepiratebay.org it is displaying a message from my ISP saying it is blocked under government rules. BUT the https icon is green and the certificate is a SNI certificate from ...
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1 answer
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Is it worth using an http proxy?

Sorry for my lack of terminology in the field, that's something I've little (or none any) practical knowledge about. I've browsed similar questions on the security risks of using (web) proxies, but ...
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Why is an IP address in a different city? [duplicate]

Someone lives in city A, but their IP address from home always displays as belonging to city B, 50 miles away in the same country. Both cities are the largest in the country, so this is not about one ...
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4 votes
2 answers
587 views

Privacy implications of static IP addresses (for home connections)

All the other questions I have seen here focus on the security implications of IP addresses. I'm interested about the privacy implications. In my opinion, static IP addresses for home connections (...
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How to prevent my ISP from seeing what sites I visit without a VPN

I use opera browser, and while the built-in VPN has been working relatively well it's been preventing me from joining discord voice calls and using omegle. Is there a way to hide my activity from my ...
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0 votes
1 answer
171 views

Using outdated ADSL modem with up to date router - Security Concerns

My parents live way out in the middle of nowhere. The only service provider that is not satellite is Century Link, which uses ADSL / phone lines. They wanted me to set them up, and the service guy was ...
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1 vote
0 answers
97 views

Which tools ISPs use for browsing logs? [closed]

It is known that ISP has to log various network data for various purposes, such as law enforcement needs. However, what are some examples of software tools used by ISPs to browse this huge amount of ...
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2 answers
9k views

What information do ISPs delete after retention period?

Whenever I read something like "ISPs store your data" or "ISPs delete your data after 6 months" or anything like that, I imagine data to be the following things: (1) At what time I ...
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-1 votes
2 answers
541 views

Is it possible to decrypt HTTPS website user activity?

Can Governments order an ISP to decrypt data about any user's personal information. If there is some information, for example, that some terror suspect has been active on an HTTPS website on the ...
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0 votes
1 answer
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Can my ISP know these things?

I am a novice about digital things (imagine the antonym for "tech savvy"). Can my ISP know my yahoo email address? I have signed in on yahoo more than a million times. Yahoo is https. Can ...
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9 votes
2 answers
7k views

What does my ISP see if I change my DNS server?

I have an interesting question and I really want to get an answer to this. What does my ISP see if I change my DNS server and I use an HTTPS connection? Firstly, when I use my ISP's DNS server: So, I ...
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1 vote
1 answer
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Can ISP deanonymize Telegram public channel creators?

In a Telegram public channel, all messages are public, send by the channel creators and contain a timestamp. Suppose I am an ISP. Can I analyse the traffic of all my clients and decide if they are ...
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35 votes
3 answers
5k views

Can ISPs replace a website's HTML/JavaScript/HTTP headers with something else?

It seems to me that "yes, they can". As I saw it in some countries, entering adult content will simply give a warning message that the site is blocked. Some places even block Facebook ...
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1 answer
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Abilities of my ISP to stop me from browsing [closed]

I visited a football site yesterday to stream a match online, and since then my connection is unstable. Like, I get connected at times and loses at times. I was over at my friends' and did the same ...
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173 views

Will anyone figure out who I am if I am downloading torrent while logged in facebook in my browser?

I have protonvpn. I am downloading torrents. I don't want anyone to know that I am downloading torrents. I am also logged in to Facebook in my browser. So Facebook knows my VPN IP. And my ISP knows ...
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1 vote
2 answers
259 views

Can the Police trace an internal user which is behind a shared IP?

Can the Police or any other lawful body obtain information about a criminal from the ISP knowing such things as the shared IP (the NAT, I believe?), timestamps, visited websites etc.?
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How can my ISP block certain websites if I'm using a VPN?

Even when I'm using a VPN (ExpressVPN), I still can't access certain websites. But when I'm using Tor browser it loads them without a problem. So this must mean that my ISP somehow knows I'm trying ...
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6 votes
2 answers
2k views

Can government track VPN traffic if it has control on both ISP and website server?

Let's say I access a website called example.com with VPN. Here's the flow: me → ISP → VPN → example.com Do typical VPN providers use the same IP address to receive data from ISP and send data to the ...
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1 vote
2 answers
148 views

Security: Multiple VPN users

Let's assume there is a service provider that hosts some services behind a firewall. Two different companies connect to the network of the service provider via VPN. (To use the services that aren't ...
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33 votes
7 answers
10k views

If I'm currently on a website and disable my VPN, is my ISP or the web server immediately aware of the change or does a page refresh have to occur?

For example: I'm browsing my favorite website with my favorite VPN enabled. I disable my VPN while I'm still on a page of the website. I haven't clicked any links yet, I haven't went back to the ...
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0 votes
2 answers
272 views

Will carrier servers allow the ISP to see anything I'm doing even on a VPN?

AFAIK, if the connection to the VPN server is properly set up, the ISP is not able to see any of the traffic. Nevertheless, I just found a worrying comment to this blog post: https://www.stealth-...
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3 votes
2 answers
190 views

How does RusNet block websites with so many separate ISPs?

How does the Russian Federation enforce the blocking of websites for end users? I know that ISPs have a database of DNS records that will redirect the user to a corresponding IP address for a given ...
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1 vote
1 answer
143 views

Basic Auth exposed to ISP/DNS?

Would someone using basic authentication in a URL such as https://username:password@example.com have their credentials be visible to their ISP or DNS?
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14 votes
2 answers
5k views

Does Tor help us to prevent ISP tracking?

If Tor is able to hide the IP address of the machine and make us anonymous, then does it prevent the ISP from tracking us?
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1 answer
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Is it safe to whitelist my public ip to a server, even I am behind CGNAT?

I have a few VPS and Databases in GCP, I can access them by whitelisting my IP, but just few months ago my ISP rollout their CGNAT and I was affected. As far as I know CGNAT, allow multiple subscriber ...
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0 votes
1 answer
360 views

Can my isp see the (non-https) websites I visit if I use browser VPN extension?

Can my isp see the (non-https) websites I visit if I use browser VPN extension? Chrome notices non-secure connection for them but I use browser based VPN extension and different country (VPN server).
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What can my ISP see regarding my VPN tunnel? [duplicate]

I use the free version of proton VPN because it has such a nice interface. From my understanding, when I connect to one of their VPNs located in the US, my information passes through an encrypted ...
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4 votes
2 answers
3k views

Is it possible to mac-spoof Xfinity Wireless?

Background Comcast/Xfinity operates various wireless hotspots across the US, accessed via the SSID xfinitywifi through the many wireless access points shown on https://hotspots.wifi.xfinity.com/ ...
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