Victim Claim
Bresme Madrid S.L.
Claimed by
nightspire
Listed on leak site
24 May 2026
Reported attack date
21 May 2026
Group claims tracked
59
Unverified claim.
This entry reproduces a listing published by the nightspire group on its own extortion site.
Attackers routinely exaggerate or fabricate victims. Nothing here confirms that
Bresme Madrid S.L. suffered a breach, or what data was actually taken.
About the organisation
Data is not available now.
What the listing means
Bresme Madrid S.L. appeared on the nightspire leak site on 24 May 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated — the attack itself is dated 21 May 2026, 3 days before the listing. This group has published 2 claims in the last 30 days and remains active.
Recommended actions
- Treat any unsolicited message referencing Bresme Madrid S.L. as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on www.bresme.com/en, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Business Services 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/QnJlc21lIE1hZHJpZCBTLkwuQG5pZ2h0c3BpcmU=