ZeroScam VS Cert Decoder

ZeroScam's answer

ZeroScam started after my own parents nearly fell for a scam. The message looked completely legitimate — correct language, personal details, even their bank’s logo. AI had made it convincing enough that they almost clicked.

That moment made something clear: modern scams no longer look suspicious. The warning signs people used to rely on are disappearing.

ZeroScam was built as a simple way to double-check suspicious messages before clicking, replying, or sending money — especially for the people we care about most.

Cert Decoder's answer:

I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.

ZeroScam's answer

ZeroScam is built using modern web technologies and a custom message analysis engine designed to identify common scam patterns while maintaining strict privacy principles.

Cert Decoder's answer:

certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server

ZeroScam's answer

ZeroScam is designed for everyday users who want a quick way to verify suspicious messages.

This includes people receiving unexpected texts or emails, families helping older relatives stay safe online, and small businesses that want to double-check unusual requests.

Anyone who has ever wondered “Is this message a scam?” is part of the audience.

Cert Decoder's answer:

certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.

ZeroScam's answer

ZeroScam is simple, private, and works with any message — no account, no installation, and no message retention.

Instead of relying on threat databases or infrastructure signals, ZeroScam looks at the message itself and explains what might make it suspicious.

The goal isn’t just detection, but helping people understand how scams work so they can recognize them more easily next time.

Cert Decoder's answer:

Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.

ZeroScam's answer

ZeroScam is currently used by individual users and early adopters.

Cert Decoder's answer:

certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.

ZeroScam's answer

Most scam detection tools rely on URL blacklists or known malicious domains. ZeroScam analyzes the persuasion patterns within the message itself — urgency signals, impersonation cues, and authority mimicry — the tactics scammers use regardless of domain or sender.

It also explains why a message looks suspicious, helping users learn to recognize scams over time.

No account required and messages aren’t stored.