marcotc (Marco Costa) | Keybase

marcotc

Marco Costa

Toronto

Chat with marcotcStart a chat
Your conversation will be end-to-end encrypted.

a mystery user with no key

marcotc.com dns

Chat with marcotcStart a chat
Your conversation will be end-to-end encrypted.

Following (0)

Followers (1)

cabello
Danilo Cabello

Browse others (15)

kartavyapareek

warrenbolyard2

lightreader
Arni

cybermong

anonsleeper

mimmu80
Lotta Eranen

chrispjohnson
Christopher P Johnson

mmeyn

gurneygurney

bapril
Benjamin April

annam
Anna Machaj

devaux
Dev

mattrafter
Matt Rafter

wiscgirl
Wiscgirl

naakov
Danilevskaya Anatoliya

What the heck is Keybase?

Keybase is an open source app

Keybase comes with everything you need to manage your identity, create secure chats, and share files privately. It's free.

It's fun too.

Over 100,000 people have joined Keybase so far to prove their identities, and it's growing rapidly.

Please send us feedback & bug reports.

Keybase, 2026 | read our blog
terms & privacy & security advisories & california ccpa & acceptable use