GadgeteerZA

This list, also known as BADBOOL, was started on September 29, 2017 and was most recently updated in October 2023 to add PimEyes and to remove TruePeopleSearch and Cyber Background Checks, since those sites will automatically remove your data if you successfully opt out of Intelius and BeenVerified.

Some of these opt-outs take a long time to go through. Sometimes, information is pulled from other sources, and you’ll need to opt out multiple times for the same site. Data brokers come and go (and are bought out by others), and they also often change their opt-out pages.

In many US states, real estate data and voter registration information is public (or easy to obtain). And, of course, location data can be found by physical means (e.g. following you home) and through other people who know it (i.e., social engineering). That said, removing your home address from data broker sites can significantly lower your attack surface and make it harder for people to find it.

This is mostly US focussed, but does give some idea of all the data brokers tracking users' data and behaviour, and that it is not easy to just opt out. The list is being managed as an open source project that it has community participation as well. So, it may also be possible to suggest adding resources for other countries too.

Unfortunately, if you're on the Internet, you do leave many traces. Very few normal users actually boot clean from a Tails Linux on a USB stick in read-only mode, and use Tor Browser without any saved logins etc. Most users also carry a mobile phone with apps installed (no more needs to be said about that).

Your best defence is though to do some basics like using a privacy based browser with fingerprint protection, script bocking, unique secure passwords per site, sandboxing (or not using) Facebook and Instagram type sites, etc.

Just yesterday, I received a phishing mail that had spoofed my own private domain e-mail address (to imply they had hacked my e-mail). I realised that, although I had activated DMARC and SPF on my e-mail service, I had made one copy-and-paste mistake in the DNS records, and no error was shown. I'd not properly checked that the DMARC indicator was showing as verified green on my service. Doing it, and actually checking it, are two separate actions one needs to do. It's the little things that trip you up.

So why are data brokers a threat to you? Well because they also collect a lot of related information which is often used to verify your identity to a call centre to have your password reset (one example).

See https://github.com/yaelwrites/Big-Ass-Data-Broker-Opt-Out-List

#technology #optout #databrokers #privacy

Today, most messaging apps have true end-to-end-encryption (Telegram's must be activated per contact for Secret Chat), but what really differs now is how many can tie your communications back to you through metadata. Obviously those which require a phone number or an e-mail address, do have your activity tied to you potentially.

WhatsApp, Signal, Telegram and similar do require this for registration. Partly it is for authentication, finding friends, and also for resetting access if access is lost. What data you can see after a reset, gives an indication of what the provider has access to. For Signal, you won't be able to read any of your older messages. Signal indicates in this linked article, though, that they only keep the very minimum of information (tested by a legal subpoena). Telegram has more access as that is how all your chats get restored, but they have been banned in various countries because they don't hand over the information. WhatsApp, of course, we all know about their passing of detailed metadata upstream to Facebook (it's in their terms and conditions). I've done a post before about the risks and the monetary rewards around harvesting metadata. Just by registering on WhatsApp, you have also shared all your friends' phone numbers to Facebook, along with how often and how long you contact them, where you are when you contact them, etc.

We've also seen lots of secure messengers emerging that require no phone number and also no e-mail address, eg. Briar, XMPP, Jami, Threema, SimpleX, Nostr, and many more. Many mainstream users don't adopt them because the common problem is, you can't find your own friends easily (who do you chat with then?).

So this is one of the reasons why Signal has been pretty popular as a secure messenger. It requires a phone number, but retains virtually no information about you to sell or leak, and you can very easily find all your friends using it. So no, it is not THE most secure messenger, but it is certainly the most secure of those requiring a phone number or e-mail address for registration.

But the main takeaway is, unlike with an SMS app where only one app may be the active SMS app, your phone can have 10 or more instant messengers installed, so there is no reason not to also have Signal installed. It helps your friends, who are more privacy conscious, to stay in contact with you via Signal. Whether a message notification pops up via WhatsApp or Telegram, It's still going to pop up, unless you have a friend that insists on contacting you through two apps at the same time. Most modern messenger apps use push notifications, so they are not constantly polling, which uses data and battery all the time.

Go ahead, try more than one messenger, and you may be amazed that there are often better and more interesting features to try. Many of your friends will thank you.

#technology #privacy #messengers #chat #Signal