A member of Anonymous has admitted to hacking into the website of the British Pregnancy Advisory Service (BPAS) and stealing information on some 10,000 woman who had registered with the service.
The Guardian reported that James Jeffery, 27, admitted to stealing the data from the organisation, the UK's largest provider of abortion services, targeting the company's servers.
Jeffery also defaced the group's website with the Anonymous logo and statement.
He was subsequently arrested on Friday after revealing details of the hack on Twitter and was brought before magistrates in Westminster, with deputy senior district judge Daphne Wickham calling him a "zealot with an anti-abortion campaign," and denying him bail.
"Many, many other organisations and people's private details would be at risk. You clearly are an able hacker," she added.
She adjourned the case because she did not feel she had enough power to pass an adequate sentence, with Jeffery set to be sentenced at Southwark crown court in the future, according to The Guardian's report.
In a statement BPAS said that it was concerned by the incident as one of the growing number of attacks being made against abortion providers, but sought to reassure those that had used its services.
“The website does store details of people who have requested information from BPAS via the website. Relevant authorities were informed and appropriate legal action taken to prevent the dissemination of any information obtained from the website,” it said.
“While the confidentiality of women receiving treatment was never in danger, this episode was taken very seriously indeed.”
The organisation also confirmed it has informed the Information Commissioner’s Office (ICO) about the breach.
Member of Anonymous have been active in the past week, hacking sites including security firms Panda Security and Symantec and website of the Vatican, since the FBI rounded-up several members of the Lulzsec collective, after group leader Sabu turned informant.
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