Organisation

The Guild of the Grumpy Old Hackers

organisation:the_guild_of_the_grumpy_old_hackers Also: Guild of the Grumpy Old Hackers, The Grumps, The Guild of the Grumpies

Dutch hacking club made up of Edwin, Matt, Victor, and other members who perform security research and responsible disclosures.

Explore relationships

Mentioned in

Relationships

Direction Predicate Other entity Origin EP
outgoing ASSOCIATED_WITH Dutch Institute of Vulnerability Disclosure Explicit 87
outgoing ASSOCIATED_WITH Hack_Right Explicit 87
outgoing ASSOCIATED_WITH BruCON Explicit 87
outgoing USES password reuse Derived 87
outgoing USES Open-source intelligence Explicit 87
outgoing USES SMTP enumeration Explicit 87
outgoing USES User-agent spoofing Explicit 87
outgoing USES Open proxy routing Explicit 87
outgoing USES responsible disclosure Explicit 87
outgoing USES Credential stuffing Explicit 87
incoming MEMBER_OF Edwin Explicit 87
incoming MEMBER_OF Matt Explicit 87
incoming MEMBER_OF Victor Explicit 87
incoming ATTRIBUTED_TO Trump Twitter account compromise (2016) Explicit 87

Claims

Edwin MEMBER_OF The Guild of the Grumpy Old Hackers

Edwin is one of the members of The Guild of the Grumpy Old Hackers.

Explicit Confidence 99% · Jack Rhysider EP 87 Details

“So, collectively you’re called what?”

Jack Rhysider · offsets 5579–5615

“I’m Edwin. I’m old.”

Edwin · offsets 6006–6026

Matt MEMBER_OF The Guild of the Grumpy Old Hackers

Matt is one of the members of The Guild of the Grumpy Old Hackers.

Explicit Confidence 98% · Jack Rhysider EP 87 Details

“Also on the call is Matt.”

Jack Rhysider · offsets 6473–6498

“My name is Matt and I spent a twenty-year professional computer security career”

Matt · offsets 6505–6584

Victor MEMBER_OF The Guild of the Grumpy Old Hackers

Victor is identified as one of the three hackers in the Guild who hacked Donald Trump's Twitter account.

Explicit Confidence 96% · Jack Rhysider EP 87 Details

“I called up the three guys that in 2016 hacked Donald Trump’s Twitter account.”

Jack Rhysider · offsets 5437–5515

“Then there’s Victor.”

Jack Rhysider · offsets 6837–6857

The Guild of the Grumpy Old Hackers ASSOCIATED_WITH Dutch Institute of Vulnerability Disclosure

The Guild members work with the Dutch Institute of Vulnerability Disclosure.

Explicit Confidence 99% · Jack Rhysider EP 87 Details

“Victor works with the Dutch Institute of Vulnerability Disclosure, something Edwin and Matt help out with, too.”

Jack Rhysider · offsets 7189–7300

The Guild of the Grumpy Old Hackers ASSOCIATED_WITH Hack_Right

The Guild works with Hack_Right, a Dutch law-enforcement program intended to redirect young offenders toward ethical hacking.

Explicit Confidence 99% · Jack Rhysider EP 87 Details

“They work with Hack_Right, a Dutch law enforcement program that helps put young offenders back on track.”

Jack Rhysider · offsets 8353–8457

The Guild of the Grumpy Old Hackers ASSOCIATED_WITH BruCON

The Guild members attended BruCON in Belgium when the Trump account incident began.

Explicit Confidence 99% · Edwin EP 87 Details

“We were at a conference called BruCON in Belgium.”

Edwin · offsets 10703–10752

Trump Twitter account compromise (2016) ATTRIBUTED_TO The Guild of the Grumpy Old Hackers

The 2016 Trump Twitter account compromise is attributed in the episode to The Guild of the Grumpy Old Hackers.

Explicit Confidence 99% · Jack Rhysider EP 87 Details

“The second time his Twitter account got hacked was in 2016, the year he was running for president, and it was done by some grumpy old hackers.”

Jack Rhysider · offsets 5094–5236

“the three guys that in 2016 hacked Donald Trump’s Twitter account”

Jack Rhysider · offsets 5449–5514

The Guild of the Grumpy Old Hackers USES password reuse

The Guild tested a password recovered from Trump's LinkedIn credentials against his Twitter account.

Derived Confidence 99% · Matt EP 87 Details

“Would he be so stupid to use – to reuse his password for his Twitter accounts?”

Matt · offsets 20309–20387

“He went straightaway to twitter.com, typed in the username @realDonaldTrump and typed in the password ‘yourefired’.”

Jack Rhysider · offsets 20987–21102

The Guild of the Grumpy Old Hackers USES Open-source intelligence

The Guild used publicly available information to identify possible email addresses associated with Trump.

Explicit Confidence 99% · Victor EP 87 Details

“We acted on OSINT. We acted on publicly available information”

Victor · offsets 25210–25272

The Guild of the Grumpy Old Hackers USES SMTP enumeration

The Guild used SMTP enumeration on Trump's domains to identify valid email addresses.

Explicit Confidence 99% · Victor EP 87 Details

“we used SMTP enumeration on his domains, over the e-mail domains.”

Victor · offsets 25718–25783

The Guild of the Grumpy Old Hackers USES User-agent spoofing

The Guild modified its user agent to imitate Trump's Samsung Galaxy S3.

Explicit Confidence 99% · Victor EP 87 Details

“You had to start messing with your user agent because you know that he’s using a very old Android phone”

Victor · offsets 29307–29410

“they switched their user agent to look like Trump’s Samsung S3”

Jack Rhysider · offsets 29831–29893

The Guild of the Grumpy Old Hackers USES Open proxy routing

The Guild routed its traffic through an open HTTP proxy in New York to appear to be logging in from Trump's normal region.

Explicit Confidence 99% · Jack Rhysider EP 87 Details

“they used an open HTTP proxy in New York to route their traffic through that to log into Twitter”

Jack Rhysider · offsets 30213–30309

The Guild of the Grumpy Old Hackers USES responsible disclosure

The Guild documented the access and reported the vulnerability to Trump and relevant authorities.

Explicit Confidence 99% · Victor EP 87 Details

“Now comes the responsible task of documenting everything”

Victor · offsets 32333–32389

“The Grumps put their findings and suggestions into an e-mail and sent it over to Trump.”

Jack Rhysider · offsets 34676–34763

The Guild of the Grumpy Old Hackers USES Credential stuffing

The Guild warned people that passwords exposed in the LinkedIn dump could be reused to access other accounts.

Explicit Confidence 98% · Victor EP 87 Details

“Most were very grateful because credential stuffing was not such a big topic in 2016 but it was going on.”