You wouldn't likely know if you are under cell phone surveillance, but you would if you were about to make a call and your phone displayed an unencrypted connection warning that states, "Caution: The mobile network's standard encryption has been turned off, possibly by a rogue base station (IMSI Catcher'). Unencrypted calls not recommended."
Stories by Darlene Storm
If you are good at research by using Google searches, does that make you a malicious cyber actor? Of course not, but DHS, FBI and NCTC (National Counterterrorism Center) have issued a bulletin warning about malicious "Google dorking" cyber actors. If using <a href="https://sites.google.com/site/gwebsearcheducation/advanced-operators">advanced search techniques</a> on Google or Bing is considered suspicious, what does that make <a href="http://www.shodanhq.com/">Shodan</a> users who specifically target SCADA, ICS, VoIP, routers, switches, webcams and printers to name but a few?