Android and iOS apps on the Google Play Store and Apple App Store contain a malicious software development kit (SDK) designed to steal cryptocurrency wallet recovery phrases using optical character recognition (OCR) stealers. The campaign is called "SparkCat" after the name ("Spark") of one of the malicious SDK components in the infected apps, with developers likely not knowingly participating in the operation. According to Kaspersky, on Google Play alone, where download numbers are publicly ava...