Maiffret, the chief technology officer for Carlsbad, Calif.-based security firm BeyondTrust, said the site contained information that, if accurate, could be very damaging to its targets.
“Pretty much everything comes falling down once you have a Social Security number,” he said. “Once somebody has that, the person has the keys to everything.”
The information could be used to shut down accounts and utilities, although Maiffret said celebrities and government officials have more resources to protect themselves and their financial companies will likely be guarding their accounts since the site’s postings.
Average consumers should consider adding a second password to their accounts to protect against hackers who have access to their Social Security numbers and other financial information.
Los Angeles police also are investigating, trying to determine how information was obtained, including the address and credit report of Police Chief Charlie Beck.
Beck told reporters Tuesday that detectives would work to bring anyone responsible for posting the info online to justice.
“We will vigorously pursue the individuals that have made me a victim and have made a number of other people that are in the public eye victims,” he said.
Beck acknowledged that many hackers operate outside the United States but said there is often a connection stateside that can lead to prosecutions.
Frank Preciado, assistant officer in charge at the LAPD online section, said the postings are illegal. He said the information on the police chief was likely taken from what is supposed to be a secure database of city employees.
The site’s page on Beck includes a reference to former officer Christopher Dorner, who apparently committed suicide after he killed four people during a multi-day rampage. Beck’s page included the message “YouCantCornerTheDorner” and an image of a woman protesting police corruption.