← back

Free resources

Basic security
is a right,
not a privilege.

My mission is to make the digital world safer. That is why the tools on this page are free: use them, share them and, most importantly, protect yourself.

They are not gadgets: they come from years of experience in the field and are designed for anyone, at any technical level. The first two run right here; the other three are separate services.

Transparent maths

A password
is measured in bits.

Length and alphabet decide how many guesses it takes. Move the slider: the password is created here, in your browser, and never leaves your device.

H = L · log₂ N
—bits of entropy
—symbols N
—combinations

This assumes a password generated uniformly at random. One chosen by a person has far less: people are predictable, generators are not.

Browser fingerprint

Every click
leaves a trace.

This terminal shows what your browser tells any website, without asking you. Put together, these details are often enough to recognise you, even without cookies.

None of this data leaves the page: it is computed here, on your device, and disappears when you close it.

guest@angelobarbosa:~

3

Could scammers send email in your domain's name?

Many companies do not know that their domains are misconfigured in ways attackers use to send phishing or defraud customers and partners. The test shows whether your domain is exposed, even without technical skills: this tool flags the most common problems.

controllosicurezza.com (IT) →
  • Instant check, even if you are not technical
  • Find out whether your domain can be used for scams in your name
  • Spot the configuration errors attackers look for

4

Has your password been stolen?

Every day emails, passwords and personal data end up online, often without people knowing. The check, powered by Matrix Intelligence, tells you in a few seconds whether your credentials have been exposed.

passwordstolen.com →
  • Instant check against known data breaches
  • Web, deep web and dark web
  • The free check needs only your email
  • Never asks for a password

Your security starts with a conscious choice. And if you have come this far, you have already made it.