Apple and Google have removed 20 mobile applications from their app stores after security researchers discovered that these apps contained data-stealing malware. The malicious software was reportedly targeting cryptocurrency wallets, with one app identified as SparkCat, which utilized optical character recognition (OCR) to extract sensitive information. Users are advised to check their devices for these applications to prevent potential unauthorized access to personal and banking data. The crackdown aims to enhance cybersecurity and protect users from cybercriminal activities.