Scattered Spider
aka UNC3944, Octo Tempest, Muddled Libra, Oktapus, Storm-0875
A group of mostly young English speakers known for phoning help desks and talking staff into resetting passwords and multi-factor login. It takes over large companies' cloud and virtualization systems.
- Alert level
- 1/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 0
- Personal data leaked (disclosed)
- 5,000 records
Exploited vulnerabilities and targeted products
If you run any of these products, first make sure they are updated to a fixed version.
How they attack
Entry
Phoning the help desk with a fake story
Like calling reception pretending to be an employee who 'lost their key' and getting a new one issued.
Entry
Flooding phones with login prompts
Like ringing the doorbell over and over at night until the tired owner finally opens up.
Goal
Encrypting whole virtualization hosts
Like seizing the building's power room to shut every floor at once instead of going room by room.
Goal
Double extortion: encrypt and leak
Like locking your safe and also taking copies of the papers inside, threatening to publish them unless you pay.
Disclosed personal data leaks
- 英国の公共交通機関の公表 (銀行口座情報、2024年) 5,000 records
Sources
Attributions are quoted as assessed by governments and security vendors. VulnPulse does not make attributions itself.
Leak counts only add up figures disclosed by the affected companies or authorities, never the attackers' own claims. We do not list victim names or link to leak sites.
The alert level is calculated automatically from reports and advisories in the last 90 days, known exploited vulnerabilities, and whether the group has targeted Japan.
Updated 2026-10-23 · daily