unknownclosedpartial fix
UNC3886 breaches Singapore telecom providers (CYBER GUARDIAN)
› Singapore major telecom providers
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- started
- Feb 1, 2026
- closed
- Feb 28, 2026
- CVEs
- none
- sources
- 1
## summary
In February 2026 Singapore’s CSA revealed China-linked UNC3886 had breached all four major telecom providers in a months-long espionage campaign using zero-days and rootkits. Singapore ran operation CYBER GUARDIAN to evict the actors.
severity: Nation-state espionage
## affected
- n/a
## fixed in
no fixed release yet
## news & write-ups[1]
## notes & caveats
Verify primary vendor advisory for exact fixed versions; facts taken from public sources listed in links.
