Upon infection, the Koler variant will send an SMS message to all contacts in the device's address book.
Reuters reported on Wednesday that DHS is investigating roughly 24 cases of suspected vulnerabilities in medical devices and hospital equipment.
The company said it is investigating a potential issue involving credit card data and that customers are not responsible for fraudulent activity on cards if an issue is discovered.
The iOS 8.1 update comes with a fix to a vulnerability known as POODLE, which can enable an attacker to decrypt data protected by SSL.
Symantec researchers received a phishing email linking recipients to a fake Dropbox login page that is hosted on Dropbox's user content domain and served over SSL.