Recent DoorDash and Signal Data Leaks Related to a Larger Ongoing Phishing Campaign

Researchers claim the “0ktapus" hacking group is behind the attacks

Crowdstrike, an American cybersecurity technology company, in it’s 2022 Global threat report noted that data leak related attacks have risen significantly over the last few years, as much as 82% going from 2020 to 2021. Just recently DoorDash confirmed a security breach where the attackers were able to access some customer details. 

DoorDash in a blog post related to the data leak, states, “We recently became aware that a third-party vendor was the target of a sophisticated phishing campaign and that certain personal information maintained by DoorDash was affected.

This is actually quite common, where big companies who outsource work to smaller firms are affected when the third-party vendors are targeted. These third-party vendors are often smaller companies, having fewer security controls than their bigger business partners. And as it is with cybercriminals, they tend to go for the Achilles heel

DoorDash found out about the data breach when they detected unusual activity from their third-party vendor’s computer. They then swiftly disabled the vendor’s access to their system. The company, after an investigation, claimed that the third-party vendor was compromised through a phishing attack,  and the attackers were then able to access some of DoorDash’s internal tools. 

DoorDash Hack Part of a Bigger Phishing Campaign 

According to DoorDash, the information that leaked was limited to user name, email address, delivery address and phone number. For a small section of users, some basic order information and a section of their card number was also compromised. Apart from users, even delivery partners were affected, and the attackers were able to access some names, phone numbers and email addresses. 

Based on our investigation to date, the information accessed by the unauthorized party did not include passwords, full payment card numbers, bank account numbers, or Social Security or Social Insurance numbers.  

Recently we reported on a very similar attack where Signal users were affected in a data breach. The breach was through a third-party phone number verification service, Twilio. Turns out, even the DoorDash data leak is related to Twilio.

As DoorDash spokesperson Justin Crowley confirmed to TechCrunch, the recent vendor breach was related to the sophisticated phishing attack on Twilio. As the TechCrunch article further states, these attacks can be traced back to the same hacking group “0ktapus”. Group-IB even made its research on the hacking group publicly available, and you can visit this link for more information. 


Indranil Chowdhury

Indranil is a Med school student and an avid gamer. He puts his absolute faith in Lord Gaben and loves to write. Crazy about the Witcher lore, he plays soccer too. When not playing games or writing, you can find him on 9gag spreading the Pcmasterrace propaganda.
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