Mintable post-mortem security incident from August 11th

On August 11th we had a security incident and this is a post-mortem of what happened.

First and foremost, everything is safe, secure and untouched. We are back online and our security measures worked as intended.

On August 11th, we had a security incident related to a malicious actor gaining access into a personal email of our lead developer. This lead the actor to be able to access the hosting provider that the Mintable domain was purchased at. They did not change, or get access to Mintable’s server, just the domain name which was hosted on a third party site. Below is the timeline of what happened.

Early morning August 11th — lead developers phone was sim swapped via social engineering and negligence by the mobile phone provider.

An hour later — The email was recovered using the sim swapped phone and the hacker attempted to steal the crypto of the lead developer. After attempting to gain access into the crypto portfolio of the developer and failing, the hacker looked into other options for malicious behavior.

Around the same time — the hacker used the phone number on twitter to find the only account tied to it, Mintable’s.

This lead the hacker to start looking into Mintable and seeing what it was. We believe the attacker did not know about Mintable before hand and was simply targeting the personal emails of our developer to steal their crypto.

Once the hacker found Mintable, he searched the email history for it and found the domain purchase from 2 years ago where he then recovered the account for that third party site to access our domain.

Shortly after — the hacker was posting on twitter and saying he would delete the domain — our security protocol for the domain went into place and it was completely locked down, as well as the whole account. Taking the domain offline.

The hacker did attempt to redirect the domain to a youtube video, but it never actually happened as the domain was taken offline.

This is to prevent our users in the event of someone gaining access and changing our code, which could put our users and their crypto at risk. So in an event of unauthorized access our first line of defense is actually to take our domain offline so no user can access the site and potentially be damaged.

This worked perfectly and no user was affected or touched by this event. (even though it was just a redirect to a youtube video as an attempt to troll).

After the sim was regained around 18 hours later, the domain was still locked and the site was still offline.

It took 2 to 2.5 days to get everything unlocked and to check and confirm that access to our servers or any changes were not made.

There was never at any point any risk to our users, we don’t store any user funds, any user keys, any user NFTs on our servers. Our severs were not touched.

As mentioned earlier, we do not believe this was an attack on Mintable, but instead an unfortunate connection between a personal email and a tie to Mintable.

Moving forward

We are back online and everything is operational again. We’d like to thank MetaMask for their swift action to put Mintable on the phishing list and prevent users from visiting the site, even though our site was offline just for this exact reason, to protect our users.

We are implementing new security practices to remove any connections from personal emails to our company and, as most people would probably say — why are you using SMS 2FA and not google auth. We are using the highest level of 2FA available for each service. This is why the only access that was able to be taken was the email, and the domain hosting provider. Both of those ONLY offer SMS 2FA. Which was enabled, but they do not offer google auth. (Which is utter bull#$$% on their part, we are looking into switching to better providers).

Again, no users have been affected, no code has been changed, no malicious activity has been detected.

We are very sorry that this happened and we are taking measures and implementing measures to prevent such activity from ever happening again.

Thank you for your support and patience during this event.

Written by

Ethereum lover and founder of

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store