B777 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 206.33; Flight Crew Total 15694.87; Flight Crew Type 8626.42
Confusion; Situational Awareness; Troubleshooting; Time Pressure
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Other / Unknown
Air Traffic Control Provided Assistance; Aircraft Equipment Problem Dissipated; Flight Crew Requested ATC Assistance / Clarification; Flight Crew FLC complied w / Automation / Advisory
Environment - Non Weather Related; Aircraft; Airspace Structure
Approximately 80 NM from the TLV FIR while in the Nicosia FIR; we lost our GPS. I believe it was because it was being jammed. We turned on 'Radio Updating' and advised ATC. Approaching the airport; we regained the use of the GPS system.  This is the second time my GPS has been jammed since the Ops Alert dealing with GPS jamming in the TLV FIR was rescinded.
B777 Captain reported possible GPS jamming.