Hacked App Part of US/Israeli Propaganda Campaign Against Iran
Source: Schneier on Security
Wired has the story.
Shortly after the first set of explosions, Iranians received bursts of notifications on their phones. They came not from the government advising caution, but from an apparently hacked prayer‑timing app called BadeSaba Calendar that has been downloaded more than 5 million times from the Google Play Store.
The messages arrived in quick succession over a period of 30 minutes, starting with the phrase “Help has arrived” at 9:52 am Tehran time, shortly after the first set of explosions. No party has claimed responsibility for the hacks.
It happened so fast that this is most likely a government operation. I can easily envision both the US and Israel having hacked the app previously, and then deciding that this is a good use of that access.