Wireless networks are often insecure, and are notorious havens for attackers, who hang out in coffee shops, hotel swimming pools and anywhere else people congregate to the closest Internet connection, as they are easy targets to breach systems anonymously and steal personal data.
Keep outsiders off your wireless network.
The hit app has had some security issues.
What to do if you receive a notification about a suspicious login to your Facebook or Instagram account.
If you work with sensitive data, these obscure features of PDF, MS Office, and cloud documents are worth knowing.