Today's Microsoft Patch Tuesday offers fixes for 80 different vulnerabilities. One of the vulnerabilities is already being exploited, and five are rated as critical.

XWiki describes itself as "The Advanced Open-Source Enterprise Wiki" and considers itself an alternative to Confluence and MediaWiki. In February, XWiki released an advisory (and patch) for an arbitrary remote code execution vulnerability. Affected was the SolrSearch component, which any user, even with minimal "Guest" privileges, can use. The advisory included PoC code, so it is a bit odd that it took so long for the vulnerability to be widely exploited.

Sensors reporting firewall logs detected a significant increase in scans for port 8530/TCP and 8531/TCP over the course of last week. Some of these reports originate from Shadowserver, and likely other researchers, but there are also some that do not correspond to known research-related IP addresses.

I've been doing Unix/Linux IR and Forensics for a long time. I logged into a Unix system for the first time in 1983. That's one of the reasons I love teaching FOR577[1], because I have stories that go back to before some of my students were even born that are still relevant today.

While reviewing malicious messages that were delivered to our handler inbox over the past few days, I noticed that the “subject” of one phishing e-mail looked quite strange when displayed in the Outlook message list…

Over the past two months, my outlook account has been receiving phishing email regarding cloud storage payments, mostly in French and some English with the usual warning such as the account is about to be locked, space is full, loss of data, refused payment, expired payment method, etc.

Infostealers landscape exploded in 2024 and they remain a top threat today. If Windows remains a nice target (read: Attackers' favorite), I spotted an Infostealer targeting Android devices. This sounds logical that attackers pay attention to our beloved mobile devices because all our life is stored on them.

Yesterday, Chinese security services published a story alleging a multi-year attack against the systems operating the Chinese standard time (CST), sometimes called Beijing Standard Time. China uses only one time zone across the country, and has not used daylight saving time since 1991. Most operating systems use UTC internally and display local time zones for user convenience. Modern operating systems use NTP to synchronize time. Popular implementations are ntpd and chrony. The client will poll several servers, disregard outliers, and usually sync with the "best" time server based on latency and jitter detected.

The info is spreading across the news websites: For approximatively two hours, many online services or websites are suffering of an Amazon Web Services outage.  Some affected services:

Attackers are everywhere! They try to abuse victims using new communication channels and social engineering techniques! Somebody pointed my to the following Tik-Tok video: hxxps://vm[.]tiktok[.]com/ZGdaCkbEF/.