BEGIN:VCALENDAR VERSION:2.0 PRODID:-//UC Berkeley Risk & Security Lab - ECPv6.17.2//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:UC Berkeley Risk & Security Lab X-ORIGINAL-URL:https://brsl.berkeley.edu X-WR-CALDESC:Events for UC Berkeley Risk & Security Lab REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:20250309T100000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:20251102T090000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:20260308T100000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:20261101T090000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:20270314T100000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:20271107T090000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=America/Los_Angeles:20260916T160000 DTEND;TZID=America/Los_Angeles:20260916T170000 DTSTAMP:20260825T232059Z CREATED:20260825T185740Z LAST-MODIFIED:20260825T232059Z UID:2950-1789574400-1789578000@brsl.berkeley.edu SUMMARY:Argyris Kriezis: The Invisible Threat: GNSS Jamming and Spoofing in Today's World DESCRIPTION:Events\n\n Argyris Kriezis: The Invisible Threat: GNSS Jamming and Spoofing in Today’s World\n\n \n \n SEP\n 16\n \n \n \n \n Wednesday\, September 16\, 2026 | 4:00 PM – 5:00 PM \n 223 Philosophy Hall \n \n \n\n \n \n \n \n \n Add to Calendar\n \n \n \n Google Calendar\n iCal / Outlook\n \n \n \n Register\n \n \n \n \n\n \n\n\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n\n \n \n \n\nGlobal Navigation Satellite Systems (GNSS) are critical infrastructure for civilian and military navigation and timing\, but their weak signal strength at the Earth’s surface makes them highly vulnerable to radio frequency interference (RFI) including jamming\, which blocks signals outright\, and spoofing\, which feeds receivers false position and timing data. GNSS interference has been recorded for years\, but since the outbreak of conflicts in Ukraine\, Israel\, and Iran\, such events have grown in number\, strength\, and duration. Because GNSS signals serve both civilian and military users\, disruptions intended for military targets often spill over\, disrupting civilian infrastructure hundreds of kilometers from active conflict zones.  \n\n\n\nThis seminar presents research from a collaboration between the Stanford GPS Lab and other universities to detect\, characterize\, and geolocate sources of GNSS interference affecting civilian infrastructure worldwide. By examining these events\, Argyris Kriezis assesses the sophistication\, impact\, and scope of such attacks. Because interference often originates across borders or in regions where direct mitigation is difficult\, the work focuses on developing early-warning technologies that can alert authorities in time to eliminate the source or mitigate its effects on critical civilian and military systems. \n\n\n\n \n About the Speaker\n \n \n \n \n \n Argyris Kriezis\n \n PhD Candidate\, Stanford University \n \n\n\n\n\nArgyris Kriezis is a PhD Candidate in Stanford’s Department of Aeronautics and Astronautics and researcher at the Stanford GPS Lab. His research focuses on GNSS interference monitoring\, with a background in satellite systems coexistence\, and spectrum management. Outside academia\, he has worked with satellite operators to support FCC licensing and technical studies that help shape national and international spectrum regulations.\n\n\n\n\n\n\n \n \n \n \n \n \n Topics\n \n Nuclear Security\n Russia\n Space\n \n \n \n\n \n\n \n Speakers\n \n \n \n \n \n Argyris Kriezis\n PhD Candidate\, Stanford University\n \n \n \n \n \n \n \n Dr. Cameron Tracy\n Senior Research Scholar\, BRSL\n \n \n \n \n \n \n \n Research Priority\n \n \n \n \n Technology\, Governance and (Inter)national Security URL:https://brsl.berkeley.edu/event/argyris-kriezis-the-invisible-threat-gnss-jamming-and-spoofing-in-todays-world/ LOCATION:223 Philosophy Hall END:VEVENT END:VCALENDAR