Bater

About the organisation

bater.pl zoominfo.com/c/bater-ltd/429692403 Bater is a leading Polish manufacturer of traction and stationary batteries, founded in 1990 with production facilities in Warsaw and Gliwice. The company specializes in producing high-quality battery systems for electric forklifts, reserve power, and renewable energy applications, along with recombination plugs and protective battery racks. Holding ISO 9001 and ISO 14001 certifications, Bater also provides comprehensive nationwide services, including battery assembly, maintenance, room renovation, and recycling

What the listing means

Bater appeared on the thegentlemen leak site on 31 July 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 134 claims in the last 30 days and remains active.

Recommended actions

• Treat any unsolicited message referencing Bater as suspicious — leaked data gets weaponised for phishing within days.
• If you hold an account on bater.pl, change that password now, update it anywhere you reused it, and enable two-factor authentication.
• Other Other 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/QmF0ZXJAdGhlZ2VudGxlbWVu