Atencio Engineering
About the organisation
Civil engineering & land surveying firm. Services: site plans, boundary surveys, OWTS (septic) design, fire line design, elevation certificates, flood plain analysis. Clients in Las Animas County, Pueblo County, Florence CO area.
What the listing means
Atencio Engineering appeared on the medusalocker leak site on 05 May 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated. This group has published 11 claims in the last 30 days and remains active.
Recommended actions
- Treat any unsolicited message referencing Atencio Engineering as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on atencioengineering.com, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Construction organisations should review this group's known TTPs and validate detection coverage against them.
- Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
- A leak-site listing is a claim made by the attacker, not a confirmed breach — check the organisation's own disclosures before acting on it.
Leak-site evidence
Listing URL https://www.ransomware.live/id/QXRlbmNpbyBFbmdpbmVlcmluZ0BtZWR1c2Fsb2NrZXI=
Show leak-site screenshot
Captured from the group's extortion site. It may contain the victim's data or the attacker's messaging.
