A routine email sent to Dent Neurologic Institute patients mistakenly included the sensitive data of others receiving treatment.
Other personal information, such as names, contact information and dates of birth, was also compromised.
The laptop was password protected, but not encrypted. The theft marks the second breach in just over a year that affected the university health care system.
After the public website of the Washington state Administrative Office of the Courts was compromised in February, an investigation revealed the severity of the breach in April.
The California Department of Public Health announced that the data included names, addresses, Social Security numbers, and medical information.
Although the specifics of the lost information is unknown, the Investment Industry Regulatory Organization of Canada has announced that 52,000 clients of 32 brokerage firms have been affected.
According to the FBI, the attack originated from a foreign IP address.
Last week, hospital officials began notifying patients of the February theft.
The records were stored by storage provider working with Glens Falls Hospital in New York.
The psychologist was a private contractor for Washington's Department of Social and Health Services.
The U.S. government is sending a clear message: We won't tolerate secrets coming to light.
Referencing the Boston bombings as terrorism prompted an unprecedented manhunt for the suspects that included a citywide lockdown. What would a similar scene have looked like on the internet?
The security researcher and self-proclaimed internet troll earned 41 months behind bars Monday for his role in using a script to retrieve data on roughly 120,000 Apple iPad users from a public web server.
Whistleblowing organizations like WikiLeaks and accused hacktivists like Hammond are not foreign spies lusting to plunder intellectual property from U.S. corporations and government agencies in order to profit and gain a competitive advantage.
The FBI and DoJ are targeting high-level U.S. officials in hopes of learning who released classified information about Stuxnet to the press. What the government is not doing is publicly explaining why it launched Stuxnet.
Hopefully the death of Aaron Swartz will lead to awareness and changes that prevents a future genius, who has so much more to offer internet users across the world, from a suicide by hanging.
The cozy relationship between national security reporting and the United States government was back on full display Wednesday with a story from the New York Times, headlined "Bank hacking was the work of Iranians, officials say."
Prosecutors around the country are sending a clear message to hackers and activists who want to use their computers to promote a political ideology: We plan to throw the book at you.
The sophisticated worm Stuxnet must be mentioned in any stories or discussions around Israel being targeted by attacks related to its ongoing conflict with Gaza.
The third and final presidential debate was heavy on the kinetic and light on the cyber. And it shouldn't have surprised anybody.