Researching a target with passive reconnaissance tools
Hunting and Gathering
© Photo by Goh Rhy Yan on Unsplash
Cyberattacks often start with preliminary research on network assets and the people who use them. We'll show you some of the tools attackers use to get information.
When sizing up potential targets, attackers try to get as much information as possible without raising any alarms. The ability to passively research the details of online resources and their associated humans has never been easier. If you're wondering what kind of information about you and your network is available online right now, the best way to find out is to look for it yourself.
This article examines some online services that tabulate known information on users and websites. Some of these services use information that is freely available through online sources; others delve into the dark web to find data that has turned up in security breaches. For privacy, and in order to demonstrate richer examples, identifying information in the output of the tools described in this article will be redacted.
Certifiable
A few years ago, the mighty Google announced [1] that it was putting more weight on websites running HTTPS, as opposed to the unencrypted HTTP alternative, for its search engine indexing results.
[...]
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Framework Laptop 13 Pro Competes with the Best
Framework has released what might be considered the MacBook of Linux devices.
-
The Latest CachyOS Features Supercharged Kernel
The latest release of CachyOS brings with it an enhanced version of the latest Linux kernel.
-
Kernel 7.0 Is a Bit More Rusty
Linux kernel 7.0 has been released for general availability, with Rust finally getting its due.
-
France Says "Au Revoir" to Microsoft
In a move that should surprise no one, France announced plans to reduce its reliance on US technology, and Microsoft Windows is the first to get the boot.
-
CIQ Releases Compatibility Catalog for Rocky Linux
The company behind Rocky Linux is making an open catalog available to developers, hobbyists, and other contributors, so they can verify and publish compatibility with the CIQ lineup.
-
KDE Gets Some Resuscitation
KDE is bringing back two themes that vanished a few years ago, putting a bit more air under its wings.
-
Ubuntu 26.04 Beta Arrives with Some Surprises
Ubuntu 26.04 is almost here, but the beta version has been released, and it might surprise some people.
-
Ubuntu MATE Dev Leaving After 12 years
Martin Wimpress, the maintainer of Ubuntu MATE, is now searching for his successor. Are you the next in line?
-
Kali Linux Waxes Nostalgic with BackTrack Mode
For those who've used Kali Linux since its inception, the changes with the new release are sure to put a smile on your face.
-
Gnome 50 Smooths Out NVIDIA GPU Issues
Gamers rejoice, your favorite pastime just got better with Gnome 50 and NVIDIA GPUs.
