ossistemes.com
About the organisation
OS Sistemes is a tech company that helps businesses bring their digital projects to life. They work closely with clients to design, build, and deliver custom technology solutions. Whether it's software development, network setup, or bringing new tech ideas to reality, their team knows how to tackle projects that other tech companies might find tricky. They're all about finding smart ways to solve technical challenges and keep businesses running smoothly.
What the listing means
ossistemes.com appeared on the lynx leak site on 10 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 not published new claims in the last 30 days.
Recommended actions
- Treat any unsolicited message referencing ossistemes.com as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on ossistemes.com, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Technology 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/b3NzaXN0ZW1lcy5jb21AbHlueA==
Show leak-site screenshot
Captured from the group's extortion site. It may contain the victim's data or the attacker's messaging.
