Security – IT Blog

Installing and using john on Linux

John the Ripper is a program for recovering passwords from their hashes.

Installing and using WPScan on Linux

WPScan – a utility for testing WordPress, searching for vulnerabilities.

WordPress. Solution “cURL error 60: SSL certificate problem: unable to get local issuer certificate”

Once on one of the sites I noticed in WordPress the menu “Tools” – “Site Health” the following errors:

I connect sensors to UniPing v3

It was necessary to monitor once at one of the stations with servers when power supply disappears. At the station, the UPS was installed, and there was a generator in front of them, which turned on automatically when there was no power supply, so there were cases when the generator could not start, and the UPS was discharged and everything turned off.

Fiddler

Fiddler is a free web debugging proxy.

Email notification when users login to WordPress

Once on several sites, it was necessary to set up sending emails about each user logging into the site.

Installing ClamAV for cPanel

I will give an example of installing ClamAV antivirus for cPanel and running a virus scan.

ClamAV script for automatic scanning and email notifications

I will give an example of a script for scanning and email notifications when infected files are detected.

Installing FastNetMon

FastNetMon – DDoS attacks detector, allows you to detect attacks and block them, for example using the BGP Flow spec, displays information in the form of graphs.

“Lock the self-replacement of SIM” at Kyivstar

Usually, simple SIM cards of the Kyivstar mobile operator, bought in some kind of stall or store, can be replaced independently with a new SIM card, for example, you can buy another SIM card there and call the operator, say that the old card is lost, report the last few dialed and accepted numbers, then the operator will block the old SIM card and activate a new one but with the same number that was on the old one.