Gesvalt
thegentlemenThis record tracks a ransomware attack claimed by the thegentlemen group against Gesvalt. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack Summary
gesvalt.es zoominfo.com/c/gesvalt/429923714 Gesvalt is a leading Spanish real estate valuation and appraisal company serving both private individuals and businesses. It offers official property appraisals for mortgage guarantees, asset distribution, and general valuation purposes, with prices starting from €75 for garages and storage units, and €165 for residential properties — reports are valid for all Spanish banks. Beyond standard appraisals, the company also provides sustainability consulting services, including BREEAM certification and decarbonization roadmaps for commercial real estate and hotel portfolios
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.