Uploaded August 2026 | Updated September 2026, 3 weeks ago
The Undeclared War: Simon Pegg on Real Cyber Threats explores just how much the actor learned about cyberattacks, online disinformation, and GCHQ while making the series.
In this Collider interview, Simon Pegg and Sian Brooke discuss the research and real-world insight behind The Undeclared War, including the show's close relationship with GCHQ advisers. Pegg explains why learning about the frequency and variety of cyber threats was both “educational and terrifying,” and how coordinated social media activity can be used to create discord and divisiveness.
Brooke digs into another side of the series: the people making enormously consequential decisions while still dealing with their own beliefs, emotions, and relationships. She also discusses stretching herself as a performer, including the challenge of delivering dialogue in Mandarin and Cantonese.
Pegg reveals how Danny becomes more multidimensional in Season 2 as audiences see him away from GCHQ as a father and husband. He also reflects on how quickly technology has caught up with ideas that seemed futuristic when Season 1 was made, including a convincing AI deepfake. Plus, Pegg and Brooke break down difficult technical dialogue, favorite scene partners, and a lengthy sequence that felt like performing a play.
Chapters:
0:00 Simon Pegg on the Reality of Cyberattacks
1:13 Sian Brooke on GCHQ's Human Side
2:24 How The Undeclared War Worked With GCHQ
3:38 Sian Brooke on Mandarin and Cantonese
4:49 Simon Pegg on Danny's Season 2 Evolution
5:40 How AI Deepfakes Caught Up With the Series
6:46 The Hardest Technical Dialogue to Perform
7:35 Favorite Scene Partners and a 25-Minute Sequence
Our Social Media:
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Video By Maggie Lovitt & Joaquin Rodriguez Carvalho
For copyright matters, please contact us at: legal@valnetinc.com
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The Undeclared War: Simon Pegg on Real Cyber Threats explores just how much the actor learned about cyberattacks, online disinformation, and GCHQ while making the series.
In this Collider interview, Simon Pegg and Sian Brooke discuss the research and real-world insight behind The Undeclared War, including the show's close relationship with GCHQ advisers. Pegg explains why learning about the frequency and variety of cyber threats was both “educational and terrifying,” and how coordinated social media activity can be used to create discord and divisiveness.
Brooke digs into another side of the series: the people making enormously consequential decisions while still dealing with their own beliefs, emotions, and relationships. She also discusses stretching herself as a performer, including the challenge of delivering dialogue in Mandarin and Cantonese.
Pegg reveals how Danny becomes more multidimensional in Season 2 as audiences see him away from GCHQ as a father and husband. He also reflects on how quickly technology has caught up with ideas that seemed futuristic when Season 1 was made, including a convincing AI deepfake. Plus, Pegg and Brooke break down difficult technical dialogue, favorite scene partners, and a lengthy sequence that felt like performing a play.
Chapters:
0:00 Simon Pegg on the Reality of Cyberattacks
1:13 Sian Brooke on GCHQ's Human Side
2:24 How The Undeclared War Worked With GCHQ
3:38 Sian Brooke on Mandarin and Cantonese
4:49 Simon Pegg on Danny's Season 2 Evolution
5:40 How AI Deepfakes Caught Up With the Series
6:46 The Hardest Technical Dialogue to Perform
7:35 Favorite Scene Partners and a 25-Minute Sequence
Our Social Media:
facebook.com/collider
x.com/Collider
Our Website
collider.com
Video By Maggie Lovitt & Joaquin Rodriguez Carvalho
For copyright matters, please contact us at: legal@valnetinc.com
#theundeclaredwar #simonpegg #sianbrooke The Undeclared War Simon Pegg real cyber threats, The Undeclared War, Simon Pegg, Sian Brooke, The Undeclared War interview, Simon Pegg interview, Sian Brooke interview, The Undeclared War Season 2, GCHQ, cyberattacks, AI deepfakes, cyber warfare
