Guntrader.uk stated that it learned of the breach on July 2021 and had notified the Information Commissioner's Office.
Guntrader.uk said around 100,000 customer records were stolen but no information relating to gun ownership or the location of firearms was taken.
Police reiterated security advice to shotgun owners, and urged that they report any suspicious activity.
Source: https://www.bbc.com/news/technology-57932823
"id": "GUN9451223",
"linkid": "guntrader-uk",
"type": "Breach",
"date": "07/2021",
"severity": "50",
"impact": "2",
"explanation": "Attack limited on finance or reputation"