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Find Out How an Attacker
Gets In, Before One Does

Penetration Testing • Technical Security • Consulting

20+years of combined offensive security experience
539vulnerabilities responsibly disclosed and validated
2CVEs credited by Google in 2026

Every engagement is led by OSCP-certified testers, and every finding is validated by a person before it goes in your report.

Why Coastline Cybersecurity

Coastline Cybersecurity is a penetration testing firm founded in 2022. We test networks, applications and people the way a real attacker would, and our testers find the vulnerabilities scanners miss. Clients include financial services firms, SaaS companies, utilities, construction firms, defense contractors, aerospace companies, education providers and cultural institutions.

Recent finds credited by Google:

  • CVE-2026-28609, remote code execution in the Android Framework, rated High and fixed in the September 2026 Android security bulletin.
  • CVE-2026-8523, a use-after-free in Chrome’s ipcz messaging layer that could allow a sandbox escape, rated High and fixed in Chrome 148.

Read about both CVEs.

Two security testers reviewing penetration test results in a server room
Hands typing on a laptop showing a security shield during a penetration test

Frequent Questions

A penetration test, often referred to as a “pen test,” is a critical method for evaluating the effectiveness of a company’s security measures. Conducted in a controlled environment, a pen test simulates potential attacks that real-world adversaries might attempt, ensuring your organization is well-prepared for any cybersecurity threats.

Undertaking a penetration test without thorough planning and coordination can lead to disruptions in your business operations. That’s why it’s essential to invest time and effort into meticulously preparing for potential risks and adjusting your strategy as needed. By engaging in discussions with project stakeholders well in advance of the testing start date, you’ll be able to anticipate and mitigate any obstacles that may arise.

You get a written report built for two audiences. Leadership gets a plain-language summary of your overall risk. Your technical team gets every finding ranked by how exploitable it really is, with the evidence to reproduce it and clear steps to fix it. An OSCP-certified tester confirms every finding before it goes in the report, so your team isn’t chasing scanner false positives. The report also documents the scope and testing dates your auditor will ask for. If a customer or partner needs proof of testing, we can provide an attestation letter so you don’t have to share the full report.

Contact Us Today!

Tell us what you are trying to protect and we will recommend the right engagement. No obligation and no sales pressure. Most inquiries get a reply within one business day.

Phone

508-507-9625

Service Area

Worldwide, headquartered in Massachusetts

What are you interested in?