The problems began Thursday night when BART officials blocked wireless access to disrupt organization of a demonstration protesting the July 3 shooting death by BART police who said the 45-year-old victim was wielding a knife.
Activists also remain upset by the 2009 death of Oscar Grant, an unarmed black passenger who was shot by a white officer on an Oakland train platform. The officer quit the force and was convicted of involuntary manslaughter after the shooting.
Facing backlash from civil rights advocates and one of its own board members, BART has defended the decision to block cell phone use, with Allison saying the cell phone disruptions were legal because the agency owns the property and infrastructure.
"I'm just shocked that they didn't think about the implications of this. We really don't have the right to be this type of censor," Lynette Sweet, who serves on BART's board of directors, said previously. "In my opinion, we've let the actions of a few people affect everybody. And that's not fair."
Laura Eichman was among those whose email and home phone number were published by the hackers Sunday.
"I think what they (the hackers) did was illegal and wrong. I work in IT myself, and I think that this was not ethical hacking. I think this was completely unjustified," Eichman said.
She said she doesn't blame BART and feels its action earlier in the week of blocking cell phone service was reasonable.
"It doesn't necessarily keep me from taking BART in the future but I will certainly have to review where I set up accounts and what kind of data I'm going to keep online," Eichman said.
Michael Beekman of San Francisco told the AP that he didn't approve of BART's move to cut cell phone service or the Anonymous posting.
"I'm not paranoid but i feel like it was an invasion of privacy," he said. "I thought I would never personally be involved in any of their (Anonymous') shenanigans."
The group Anonymous, according to its website, does "not tolerate oppression from any government agency," and it said it was releasing the User Info Database of MyBart.gov as one of many actions to come.
"We apologize to any citizen that has his information published, but you should go to BART and ask them why your information wasn't secure with them," the statement said.
Associated Press writers Terry Tang and Bob Seavey in Phoenix also contributed to this report.