F-Secure’s leadership reshaping continues.

The Finnish cybersecurity company said recently that Chief Product Officer TL Viswanathan will leave in mid-August to pursue new opportunities. His departure marks the fifth senior leadership transition at the company in less than a year, following changes across finance, strategy, and technology.

His exit comes as F-Secure moves deeper into the commercial rollout of the telecom partnerships, embedded security products, and AI-driven development initiatives built over recent years.

Viswanathan helped build much of that foundation.

The executive behind embedded security

Viswanathan joined F-Secure roughly four years ago and became one of the central figures behind the company’s product expansion strategy.

During his tenure, he led the creation of F-Secure’s Embedded Security business and oversaw the acquisition and integration of Lookout Life, which expanded the company’s consumer identity protection capabilities.

“I want to sincerely thank TL for his outstanding contributions to F-Secure over the past years,” CEO Timo Laaksonen said in the company announcement. “TL has played a central role in setting up our Embedded Security business as well as the Lookout Life acquisition and integration.”

Laaksonen also credited Viswanathan with rebuilding the company’s product organization and strengthening its focus on consumer experience.

Viswanathan described the role as “some of the most meaningful” work of his career and said he leaves with “full confidence in the mission, the strategy, and the people executing it.”

The business he helped shape is now entering a more commercially demanding phase.

In March, F-Secure raised its 2026 revenue outlook after announcing a partnership with Verizon and stronger-than-expected business performance. The company said new Tier 1 services are expected to begin generating revenue during 2026. A separate Tier 1 Communications Service Provider agreement signed in December 2025 is also expected to reach consumers during the second half of this year.

The focus is shifting from deployment to scale.

An interim successor while the search continues

Katja Kuusikumpu, currently director of portfolio governance & operations, will become interim chief product officer effective August 17.

F-Secure has not announced a permanent successor or a timeline for the appointment.

The next product leader will inherit a business already under pressure to prove that its Embedded Security model can scale profitably through telecom operator relationships.

That makes the appointment more than a routine replacement. Product execution now sits close to the center of the company’s growth strategy.

Nearly every major leadership function has changed

Viswanathan’s departure is part of a broader turnover cycle that has reshaped much of F-Secure’s executive structure since late 2025.

In October 2025, the company appointed Santeri Kangas as CTO. In December, CFO Sari Somerkallio announced her departure, with former Revenio Group finance chief Robin Pulkkinen named as successor.

In February, former F-Secure executive Jyrki Tulokas returned as chief strategy officer after leadership roles at Verkkokauppa.com. Earlier this year, SVP of Corporate Development Antero Norkio also exited the company.

Taken together, the changes point to a company rebuilding key parts of its leadership structure while preparing for a different stage of growth. 

The appointments also reveal a clearer operational direction. Kangas brings a stronger AI-native engineering focus. Tulokas combines previous F-Secure experience with channel and e-commerce strategy expertise. Pulkkinen arrives with a mandate likely centered on profitability discipline and leverage reduction.

The company’s priorities increasingly appear aligned around three areas: scaling telecom partnerships, improving operational efficiency through AI, and expanding margins.