Through the years of analyzing identity compromises in the cloud, Fortinet researchers have seen the same attackers pop up regularly, some more frequently than others. Among the more prolific ones they’ve come to know is one they’ve dubbed “EC2 Grouper”. Over the past couple of years, they’ve seen this actor in several dozen customer environments, making them one of the more active groups we’ve tracked.
This usual suspect is attributed by their penchant for using similar user agents and the same security group naming convention in their attacks. While indicators such as user agents and even security group names can assist in attribution and hunting, Fortinet have found them unreliable for comprehensive threat detection.
Read more…
Source: Fortinet
Related:
- Suspect arrested after incendiary device thrown at OpenAI CEO Sam Altman’s home
April 11, 2026
A 20-year-old man has been arrested after a Molotov cocktail was thrown at the San Francisco home of OpenAI CEO Sam Altman early Friday morning. The incident happened around 4:00 am when a suspect “threw an incendiary destructive device” at Altman’s home, “causing a fire to one exterior gate” before fleeing on foot, according to statement ...
- Hungary: Nearly 800 state logins surfaced in breach data, including defense and NATO-linked accounts
April 11, 2026
Hungary’s government has discovered the hard way that the biggest threat to national security might just be its own password choices. An investigation by Bellingcat has uncovered close to 800 Hungarian government email and password pairings circulating in breach dumps, cutting across nearly every major ministry, from defense and foreign affairs to finance. This doesn’t look ...
- FBI Atlanta, Indonesian Authorities Take Down Global Phishing Network Behind Millions in Fraud Attempts
April 10, 2026
In a first-of-its-kind joint cyber investigation, the FBI Atlanta Field Office and Indonesian law enforcement authorities have dismantled a sophisticated global phishing operation that enabled cybercriminals to steal thousands of victims’ account credentials and attempt more than $20 million in fraud. The operation centered on the W3LL phishing kit, a widely used cybercrime tool that allowed ...
- CPU-Z, HWMonitor watering hole infection – a copy-pasted attack
April 10, 2026
On April 9, 2026, the website cpuidcom, hosting installers for popular system administration software CPU-Z, HWMonitor (HWMonitor Pro) and Perfmonitor 2, was compromised. Kaspersky researchers observed that starting from approximately April 9, 15:00 UTC, until about April 10, 10:00 UTC, the legitimate download URLs for installers of that software have been replaced with URLs to the ...
- ClickFix finds a new way to infect Macs
April 10, 2026
ClickFix campaigns are looking for alternatives now that many Mac users have been made aware of the dangers of pasting certain commands into Terminal. Researchers found that ClickFix has kept the same social engineering playbook but completely sidestepped Terminal by using the applescript:// URL scheme to auto‑open Script Editor with a ready‑to‑run script that pulls Atomic ...
- Hacker stole £700,000 from UK energy company by redirecting payment
April 9, 2026
British oil and gas company Zephyr Energy says someone stole £700,000 (close to $1 million) from one of its U.S.-based subsidiaries by redirecting a payment meant for a contractor into a hacker-controlled account. In a regulatory filing with the London Stock Exchange on Thursday, the company said it is “working with the corresponding banks and ...