Cerio
cerio.io
Overview
View group profileDomain
cerio.io
Industry
Technology
Country
Taiwan
Discovered
3 months ago
Attack date
Mar 19, 2026
Confidence
100%
Severity
Medium
Status
Claimed
Threat group
thegentlemenTotal victims
427
First seen
Jun 2025
Last seen
Jun 2026
Group status
active
Sophistication
0
Impact score
89
Threat level
4.2/10Aggressiveness10/10
Lethality0.1/10
Criticality2.2/10
Status breakdown
Data Leaked0.7%3
Negotiating0.5%2
Claimed
this victim
73.5%314Victim's position within group
Industry
Technology
Known target sector
Country
Taiwan
Not a listed target country
Other victims
View all (427)Same group · thegentlemen
Group activity
Monthly attacks · thegentlemen
427
total · avg 32.8/mo