Jozef Stefan Institute (IJS)
About the organisation
[AI generated] Jozef Stefan Institute (IJS) is Slovenia's leading research institution, headquartered in Ljubljana. It operates across multiple scientific disciplines including physics, chemistry, biochemistry, electronics, information technology, and environmental sciences. Founded in 1949, it conducts fundamental and applied research, hosts numerous national and international projects, and collaborates with academic and industrial partners. It also plays a key role in educating postgraduate researchers in Slovenia.
What the listing means
Jozef Stefan Institute (IJS) appeared on the coinbasecartel leak site on 11 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 4 claims in the last 30 days and remains active.
Recommended actions
- Treat any unsolicited message referencing Jozef Stefan Institute (IJS) as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on ijs.si, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Education 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/Sm96ZWYgU3RlZmFuIEluc3RpdHV0ZSAoSUpTKUBjb2luYmFzZWNhcnRlbA=...