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Security Leftovers

Submitted by Roy Schestowitz on Tuesday 14th of September 2021 05:44:40 PM Filed under
Security
  • What I learned from Russian students: logging is important | Random thoughts of Peter 'CzP' Czanik

    I checked the logfiles of the servers I managed occasionally, but mostly only to check if the hard drives were showing any signs of failure. While browsing the logs for hard drive errors, I came across some suspicious login messages. Logins from previously not seen unknown IP addresses. I knew that the addresses were from campus, so I asked around. It turned out, that they belonged to the Russian students laboratory. And talking to the user it turned out, that he was unaware that his account was used also by someone else.

    The exact order of events is a kind of blurry, it was a quarter of a century ago. I started to check log messages not just for hard drive problems but also for security related events. I could see more and more logins from the Russian students laboratory. It was a kind of cat and mouse game, I was trying to keep unauthorized users out of the system.

  • Security updates for Tuesday

    Security updates have been issued by openSUSE (libaom and nextcloud), Oracle (cyrus-imapd, firefox, and thunderbird), Red Hat (kernel and kpatch-patch), Scientific Linux (firefox and thunderbird), and Ubuntu (apport).

  • Ubuntu Livepatch on-prem reduces downtime and unplanned work on enterprise environments!

    Canonical announces Ubuntu Livepatch on-prem, an enhancement to its Ubuntu Livepatch service enabling organisations to take control of their kernel livepatching policy. Designed for complex enterprise environments that follow their own patch rollout policy, Ubuntu Livepatch on-prem provides the basis for an efficient but fine-tuned continuous vulnerability management on private, hybrid, or public clouds. It provides a functional and productive experience to system administrators, or IT operations teams. The announcement represents the next phase in the Ubuntu Livepatch service targeting enterprise environments as organisations around the world adopt cybersecurity frameworks and requirements to tackle a constantly changing threat landscape.

  • Hackers develop Linux port of Cobalt Strike for new attacks | IT PRO

    The tool has been developed from scratch to avoid detection from malware scanners.

    According to a report published by cloud security firm Intezer Labs, researchers last month discovered a fully undetected ELF implementation of Cobalt Strike’s beacon. The malware used Cobalt Strike’s Command and Control (C2) protocol when communicating to its C2 server and has remote access capabilities such as uploading files, running shell commands, and writing to files.

    Cobalt Strike is a legitimate penetration testing tool used by security teams to discover vulnerabilities within their organization.

    Researchers warned that the malware is completely undetected in VirusTotal and was uploaded from Malaysia. Intezer researchers Avigayil Mechtinger, Ryan Robinson and Joakim Kennedy said that this Linux threat has been active in the wild since August, predominantly targeting telecom companies, government agencies, IT companies, financial institutions, and advisory companies around the world.

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One more...

Submitted by Roy Schestowitz on Tuesday 14th of September 2021 06:52:43 PM.
  • CERT NZ Releases Ransomware Protection Guide for Businesses [Ed: Deleting Microsoft Windows (click or open to execute) would be a good start]

    The New Zealand Computer Emergency Response Team (CERT NZ) has released a guide on ransomware protection for businesses. The guide includes a pair of helpful diagrams that outline different ransomware attack pathways and illustrate where relevant security controls can work to protect or stop an attack.

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