L3Harris is a US defence contractor with work in cyber, communications, electronic warfare, space systems and maritime autonomy. Its Trenchant unit built offensive cyber tools for US government customers, placing the company in a part of the defence market where access controls and operational secrecy matter as much as software capability.

The company also develops the Iver4 900, a torpedo-tube-launched autonomous underwater vehicle. L3Harris announced deliveries of that platform to the US Navy in May 2026, giving its maritime autonomy business a direct connection to crewless undersea operations.

That combination makes L3Harris relevant across classified cyber capability and naval robotics. Both fields depend on long procurement cycles, government customers and the ability to protect specialised technology.

Key Issues

Undersea autonomy

L3Harris gains an AUKUS platform

On 30 May, AUKUS selected L3Harris’s Iver4 900 for its first Pillar II advanced-technology project. The submarine-launched vehicle joined another US-built platform in a shared payload programme, with hardware deliveries scheduled from 2027.

The selection gives L3Harris a named role in an allied undersea programme before its payload and sensor work is settled. On 8 June, Kongsberg and Drass answered the US-led launch with a European bid built around a drone-carrying compact submarine. That competition makes the Iver4 900’s AUKUS place a useful reference, but not a guaranteed order book.

Common Questions

How did Peter Williams steal hacking tools from the US government?

Peter Williams worked as an executive at Trenchant, the cyber unit of US defence contractor L3Harris. He stole at least eight zero-day exploits developed exclusively for US government use and sold them to Operation Zero between 2022 and 2025.Source: DOJ sentencing documents

What is Trenchant at L3Harris?

Trenchant is L3Harris's specialist offensive cyber capability unit that develops hacking tools for classified US government programmes.Source: DOJ / OFAC

What is the L3Harris Iver4 900 autonomous underwater vehicle?

The Iver4 900 is a submarine-launched autonomous underwater vehicle manufactured by L3Harris, designed for launch and recovery through standard torpedo tubes. It entered delivery to the US Navy under a Defense Innovation Unit contract in May 2026.Source: Lowdown

What did L3Harris's Trenchant unit do and why was it in the news?

Trenchant is L3Harris's offensive cyber capability unit that develops tools for US government customers under classified programmes. It came under scrutiny after former executive Peter Williams stole at least eight zero-day exploits and sold them to the Russian-linked broker Operation Zero between 2022 and 2025.Source: US Department of Justice

How long was the L3Harris insider sentenced for selling US exploits?

Peter Williams was sentenced to 87 months (seven years, three months) on 24 February 2026 after pleading guilty on 29 October 2025 to stealing and selling at least eight classified zero-day exploits.Source: US Department of Justice

What is OFAC's link to the L3Harris cyber case?

OFAC used the Protecting American Intellectual Property Act for the first time in a cyber matter, sanctioning Sergey Zelenyuk and his firm Operation Zero — the Russian-linked broker that bought the exploits stolen from L3Harris's Trenchant unit — simultaneously with the DOJ sentencing of Williams.Source: OFAC / US Treasury

What is L3Harris's role in Royal Navy autonomous underwater vehicles?

L3Harris is active in torpedo-tube-launched AUV supply to allied navies. It announced in May 2026 that its Iver4 900 AUV is in delivery to the US Navy, competing in the same sector where HII's REMUS programme is courting the Royal Navy through British partner Babcock.Source: Lowdown

Source Material

L3Harris Technologies — Wikipedia L3Harris Technologies — Official Website