WHOIS contacts are your friends
You’ve rocked up to work ready to start the day and get on with the list of jobs the boss has graciously gifted you with, when your daily routing of reviewing the logs brings the normal sigh as x.x.x.x is externally scanning and probing for open ports on the perimeter.
Depending on the security stance or care factor the offending IP address may go in a block list, be ignored, be investigated further or none of the above. Let’s say that you want to report this so you do a quick WHOIS lookup on the offending IP address. There are plenty of web sites that offer WHOIS lookups but if you want to perform searches from the command line Swa Frantzen’s guide [1] is a great refresher.
This is where you can run in to a very frustrating road block of the Useless Contact Email Details. The two worst offenders are the fake email addresses (none@nowhere.com being a favourite) or the horribly out of date email address of that goes deep into cyber space never to be seen again. One of the fun parts about being on the defensive team is trying to work out if it’s worthwhile telling someone their computers aren’t playing nice any more. So make it easy for them to do that and if someone makes that effort, be a good internet citizen and have a valid, current email address on the WHOIS record.
NOTE – Before the screaming and tearing of hair occurs because I’m advocating putting a valid email address that can be use be the evil smurfs gain information on you or the company, feel free to use on of the numerous WHOIS protection services that shields your email behind one of their email addresses. As long as the email gets to you, that’s all that matters.
Fixing WHOIS record details is easy and straightforward*, so get it done and tick off that New Year’s resolution to help out the internet.
Oh, and should you get a call from someone notifying that something might be wrong with your systems, fellow handler Tom Liston came up with a fairly comprehensive list on how not to response to someone giving you the heads up [2].
[1] http://isc.sans.edu/diary.html?storyid=9325
[2] http://isc.sans.edu/diary.html?storyid=1260
* Unless you work for a big, very big company, so get raised a work ticket and have some poor soul work out how to do it and treat yourself to something nice.
Chris Mohan --- Internet Storm Center Handler on Duty
Comments
Anonymous
Dec 3rd 2022
9 months ago
Anonymous
Dec 3rd 2022
9 months ago
<a hreaf="https://technolytical.com/">the social network</a> is described as follows because they respect your privacy and keep your data secure. The social networks are not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go.
<a hreaf="https://technolytical.com/">the social network</a> is not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go. The social networks only collect the minimum amount of information required for the service that they provide. Your personal information is kept private, and is never shared with other companies without your permission
Anonymous
Dec 26th 2022
9 months ago
Anonymous
Dec 26th 2022
9 months ago
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<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
9 months ago
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> nearest public toilet to me</a>
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
9 months ago
Anonymous
Dec 26th 2022
9 months ago
https://defineprogramming.com/
Dec 26th 2022
9 months ago
distribute malware. Even if the URL listed on the ad shows a legitimate website, subsequent ad traffic can easily lead to a fake page. Different types of malware are distributed in this manner. I've seen IcedID (Bokbot), Gozi/ISFB, and various information stealers distributed through fake software websites that were provided through Google ad traffic. I submitted malicious files from this example to VirusTotal and found a low rate of detection, with some files not showing as malware at all. Additionally, domains associated with this infection frequently change. That might make it hard to detect.
https://clickercounter.org/
https://defineprogramming.com/
Dec 26th 2022
9 months ago
rthrth
Jan 2nd 2023
8 months ago