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Intruder Reviews 

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TrustScore 3 out of 5

2.9

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Company details

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Intruder's continuous exposure management platform helps security, IT, and engineering teams stop breaches before they start. By unifying AI penetration testing, attack surface monitoring, cloud security, and vulnerability management in one intuitive platform, Intruder gives stretched teams an always-on security source of truth. Our approach focuses on continuous automated scanning using deep security expertise and agentic solutions to ensure that the findings we deliver are accurate, prioritized by real-world risk, and ready to act on. Founded in 2015 by Chris Wallis, a former ethical hacker turned corporate blue teamer, Intruder is now protecting over 3,000 companies worldwide. Intruder has been awarded multiple accolades, was selected for GCHQ’s Cyber Accelerator, included on Deloitte’s Tech Fast 50 2023 list as the fastest-growing cybersecurity company in the UK and was named in G2’s 2026 Best Software Awards.

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2.9

Average

TrustScore 3 out of 5

2 reviews

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2.9

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1 review in the last 12 months

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Rated 1 out of 5 stars

Intruder is neither smart nor ethical…

Intruder is neither smart nor ethical as a computer security service.

They hammer the servers they scan an unreasonable number of times (up to 48 000 hits on the SAME port in one night). This gets them blocked by everyone who's competent at server management. This also gets them published in abuse IP databases. The worst thing about this is that they use amazon compute for this. So they are getting IP addresses that other people are using for legitimate purposes blacklisted and blocked. So those legitimate users will experience periodic and nigh on impossible to debug service interruptions. If a reputable company came up with the block-headed idea of performing such a scan they would at least use their own servers.

At my company the IT security people have had to contact everyone who manages servers to tell us to unblock intruder. Annoying, but that doesn't help all the other innocent and uninvolved users with no connection to this bad actor.

March 10, 2026
Unprompted review
Rated 1 out of 5 stars

Constant Battle with Account

The dashboard is great and intuitive. However, every other time I tried to scan a target from a client, my account would get "suspended". I'm tired of trying to fight to keep my account open, not worth the time or money. Plus, the chat bot doesn't give you options to prove you have authority to do the work aside from two options that really have nothing to do with immediate verification.

Better solutions than this company are Snyk and Acunetix for the same price or less.

September 16, 2022
Unprompted review
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Reply from Intruder

Hello Anna,

We’re really sorry to see that you had a frustrating experience with the platform and apologise for any inconvenience caused. If you would like to revisit Intruder, you’re more than welcome to reach out via contact@intruder.io and a member of the team would be delighted to assist you.

To address your feedback specifically, a member of the team took a look at you account and identified a couple of reasons for the suspension:

1. The account name (or company name) was set to ‘Student’ and since we don’t support academic use, the account was flagged.
2. The two targets you added didn’t correlate with the email domain used to sign-up (which can be indicative of a user scanning other people’s property).

Both of these can trigger a suspension and when that happens an email is automatically sent explaining the situation and how it can be resolved. We were able to confirm that an email was delivered, though we understand that sometimes they do get missed. We believe this may have also happened to an email that was sent by a member of commercial team offering a call.

As for the bot, it offers two options for establishing a user’s authority to scan a target, both of which connect you with a member of the team as they’re the ones that can manually verify this and reverse the suspension. We were only able to find one interaction between yourself and the bot, but as you didn’t click any of the options it automatically closed after three minutes. (Though you can reopen a ticket at anytime by replying or clicking a button).

We weren’t able to find any other correspondence from you, but if we have missed anything, please don’t hesitate to let us know so we can investigate and hopefully improve our processes.

We look forward to hearing from you soon.

Kindest,
Team Intruder

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