Silk Typhoon
aka HAFNIUM
An espionage group known for being among the first to use brand-new VPN flaws. Lately it steals IT providers' access keys to reach their customers' cloud data.
- Alert level
- 3/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 7
- Personal data leaked (disclosed)
- None confirmed
Attribution
- Assessed as a Chinese espionage group — Microsoft
Exploited vulnerabilities and targeted products
CVE-2025-0282 CVE-2024-3400 CVE-2023-3519 CVE-2021-26855 CVE-2021-26857 CVE-2021-26858 CVE-2021-27065
If you run any of these products, first make sure they are updated to a fixed version.
How they attack
Entry
Exploiting internet-facing devices
Like finding a broken lock on the company's front gate (VPN or firewall) and walking in.
Entry
Getting in through a supplier
Like stealing the spare key from the cleaning company instead of breaking into headquarters.
Inside
Hopping from the office network to the cloud
Like getting a visitor badge at reception and then using it to open the warehouse in another building.
Goal
Quietly stealing information
Like a spy who stays for months, copying files from the cabinet a little at a time.
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