Proton
For Business
Proton
For Business
Free guide

The tech breaches that broke 2025

Small businesses are in the crosshairs of more cyberattackers. Why? 

In 2025, tech startups with lean teams and valuable data were breached because their defenses couldn’t scale as fast as their data. That’s why even the smallest teams have become high-value targets. They don’t have to be.

Protecting your tech SMB in 2026 can be as simple as fixing three weaknesses.

Your business isn’t too small to fail

We analyzed three breaches at fast-growing tech companies to find out what happens when a single compromise exposes everything.

It confirmed what original research from the Proton Data Breach Observatory shows:

  • 71% of breaches affect small- and medium-sized businesses

  • A single breach can cost a startup over $1 million

Three controls that harden your defenses

The underlying patterns of a data breach show up again and again. Attacks don’t need to be sophisticated when access is loose, visibility is fragmented, and data isn’t end-to-end encrypted by default. They just need time.

What you’ll learn in this ebook

The breaches that broke 2025 translates attacks into clear, actionable insights for startups:

  • Why hackers target small businesses
  • Where security breaks down in fast-growing teams
  • What it means to build in private

In three decisive moves, you can limit the impact of a breach immediately.

Who this ebook is written for

This guide is written for startup founders, CTOs, and technical leads who:

  • Ship software

  • Handle customer data

  • Run lean teams without dedicated security staff

  • Make decisions about access, infrastructure, and risk

  • Don’t want a security incident to become an existential one

Download: The Breaches that Broke 2025

See how real breaches actually unfold to learn the best ways to protect your startup this year.

Frequently asked questions

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