• About Us
  • Pentest
    Overview

    Our approach to pentesting

    Web Application

    Web apps, web servers & websites

    Mobile Application

    iOS, Android and other apps

    LLM & AI Application

    Red Team LLM & AI pentesting

    Cloud Security

    AWS, Azure and GCP testing

    Physical Penetration

    Onsite security assessment

    External Infrastructure

    Perimeter defence testing

    Internal Infrastructure

    Internal network & insider threats

    Social Engineering

    In-depth, highly-targeted phishing

    Phishing Simulation

    Phishing testing & awareness

  • Resources
    Resource Hubs
    Cloud Security Hub

    All you need to know about Cloud Security

    Penetration Testing Hub

    All you need to know about Penetration Testing

    Guides

    Topical whitepapers that dive into the current state of affairs

    Latest Articles

    OnSecurity secures business of the year awards
    Blue banner image reads: "AI Security Risks in 2026: Top Emerging Threats for Businesses" with a graphic of a human outline and brain.
    Blue banner image reads "How CISOs can build a strong cybersecurity culture" with a graphic of extended hands meeting in unison.
    See All Articles
  • Customers
    Testimonials

    What people are saying about the service at OnSecurity

    Case Studies

    Why Early-Stage Security Testing Builds Client Trust

    Driving Secure Growth Through Seamless Testing

    Talon Outdoor Transforms Security Testing with OnSecurity’s Platform Approach

    Trusted and Transparent: Why Pentagull Partners with OnSecurity for Annual Penetration Testing

    See All Case Studies
  • Events
  • Contact
Get Your Quote. Instantly.
  • Start Your Instant Quote
  • About Us
  • Pentest
    • Penetration Testing Services
    • Web Application Penetration Testing
    • Mobile Application Penetration Testing Services
    • Cloud Penetration Testing Services
    • Physical Penetration Testing
    • External Infrastructure Penetration Testing
    • Internal Infrastructure Penetration Testing
    • Social Engineering Penetration Testing
    • Phishing Penetration Testing Services
    • LLM & AI Red Teaming and Penetration Testing
  • Platform Features
    • External Vulnerability Scanning
    • Threat Intelligence & Web Scanning
  • Resources
    • Cloud Security Hub
    • Penetration Testing Hub
    • OnSecurity’s Latest Articles, News and Industry Tips
  • Customers
    • Case Studies: The Stories of Success
    • Testimonials of Cybersecurity Success
  • Events
  • Contact

Understanding Microsofts latest changes – passwords?

Password

Explore the risks businesses face with internet-stored data and the prevalent distrust in online security, highlighting the need for robust protection.

Deep dive: The Enquiry Ordered Into GCHQ’s Deal With Amazon

Amazon Enquiry

Online US retail giant Amazon has used its cloud operations to do a deal with the GCHQ, MI5, and MI6, The Financial Times (FT) reports. This has raised concerns over how data […]

When Sony BMG Exposed Millions To Malware Attacks and Why

Malware

Sony is a gigantic multipartite corporation that has been prone to multiple different types of hacks, find out why and how they improve their security posture

The Secret to Google’s Security, you can find out here

The Secrets To Googles Security

Catch Of The Week Did you know that Google has never been the victim of a successful phishing attack? Not bad for a company of 140,000 staff and counting. 2021 saw the amount of phishing […]

Info – CVE-2021-44228: Apache log4j Remote Code Execution

Zero Day

CVE-2021-44228: A new high profile zero-day vulnerability affecting large number of Java applications through a vulnerable version of the widely-used library Apache log4j.

Phishing – ‘Is It Still One of The Biggest Cyber Threat?’

Phishing Biggest Cyber Threat

New research shows the prevalence of email phishing as the top cyber threat, tricking firms into revealing information through reputable sender disguises.

The Secret to Google’s Security, find out more here

The Secrets To Googles Security

Google’s very impressive record: Zero successful phishing attacks on a massive workforce of 140,000+ employees. Discover their security success story.

The enquiry ordered into GCHQ’s Deal with US Amazon

Amazon Enquiry 1

“Online US retail giant Amazon has used its cloud operations to do a deal with the GCHQ, MI5, and MI6, The Financial Times reports.

Pentest Files: Error Messages And Cloud Access Keys

Cloud Access Keys

Welcome to our Pentest Files blog series. Each blog post will present an interesting or dangerous finding one of our testers has identified in an actual recent pen-test, so you […]

What Was The First Ransomware Virus And Its Importants?

Ransomware Virus

One of the biggest growing problems in computer security is the growing proliferation of cyberattacks which are far more open and threatening in nature.

← previous
Next →
Connect with OnSecurity—your global cybersecurity partner. Reach out for incident response, threat intelligence, or strategic collaboration. We're here to secure your digital future.

The OnSecurity founders spent a collective 40 years as professional ethical hackers. This experience has given us a unique insight into the hacker mindset, and how the modern cyber-crime industry works. We use this experience to protect our customers from modern hackers.

Quick Links
  • Careers at OnSecurity
  • Log in
  • Careers at OnSecurity
  • Log in
Legal
  • Privacy Policy
  • Cookie Policy
  • Terms & Conditions
  • Privacy Policy
  • Cookie Policy
  • Terms & Conditions
Get In Touch
  • contact@onsecurity.io
Twitter Linkedin

© 2025 All rights reserved OnSecurity Technology Limited
Company registered in England and Wales. Registered number: 14184026 Registered office: 1 Victoria Street, Bristol, England, BS1 6AA. 

Manage Consent
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behaviour or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
  • Manage options
  • Manage services
  • Manage {vendor_count} vendors
  • Read more about these purposes
View preferences
  • {title}
  • {title}
  • {title}