Violators will face fines of up to $2,500 for every non-compliant app that gets downloaded. "Protecting the privacy of online consumers is a serious law enforcement matter," said Harris in a statement. "We have worked hard to ensure that app developers are aware of their legal obligations to respect the privacy of Californians, but it is critical that we take all necessary steps to enforce California's privacy laws."
[ A lot of attention is being paid to apps. Read Popular Android Apps Vulnerable. ]
Businesses that received the state's privacy-warning letters this week included the airlines Delta and United Continental, as well as OpenTable, reported Bloomberg.
OpenTable didn't immediately respond to an emailed request for comment.
When it comes to protecting consumer privacy, California continues to be on the leading edge, and its efforts have had influence far beyond the state's borders. Notably, the state was the first to pass mandatory data-breach-notification legislation, via S.B. 1386. That law requires any business that experiences a breach to notify affected state residents, unless the breached data was encrypted. But the alerts also helped residents of other states learn about breaches that may have involved their personal information. California's law also became the model for other states, almost all of which now have data-breach notification requirements in place. In contrast, Congress has been unable to pass a national data breach notification law.
[Editor's note: Story updated 11:45 a.m. 10/31 to add comment from United.]