I asked a Twitter account claiming to be the Baltimore ransomware hackers to prove it. So they left a message on a dark web page they set up to talk to the city.

Before it was shut down, the Twitter account threatened to leak city documents https://t.co/28SqxDuOJp

— Ian Duncan (@iduncan) June 4, 2019

City officials have said there's no evidence personal data was stolen by the hackers.

But a spokesman for the mayor says authorities are investigating documents posted to the Twitter account https://t.co/28SqxDuOJp

— Ian Duncan (@iduncan) June 4, 2019

City of Baltimore says "as many as 90 percent" of city employees are "getting back online by the end of the week" following May 7 ransomware attack. Their capability has been (literally) decimated (or worse) for a *month*. Wow. https://t.co/t0ehGrEXjp and https://t.co/OwkoLujCo0

— Peter Coffee (@petercoffee) June 5, 2019

After a two-year break I've pulled out the sledgehammer and broken my debuggers out of the basement floor. Now available for malware incident consulting or RCE training. Latest work on behalf of @Armor: https://t.co/VFVIMVTTRN https://t.co/S8aZzdAoI0 https://t.co/dB9VjZAVvD

— Joe Stewart (@joestewart71) June 5, 2019

Baltimore officials update public on ransomware recovery https://t.co/p9Gu3JwMSr

— Benjamin Freed (@brfreed) June 4, 2019

Baltimore’s bill for ransomware: Over $18 million, so far https://t.co/mXG5nQ1Qzc

— Sean Gallagher. (@thepacketrat) June 5, 2019

Baltimore’s bill for #ransomware: Over $18 million, so far https://t.co/SB4j0lcPPv #Infosec pic.twitter.com/ZbsWADM89w

— #AI (@AI__TECH) June 6, 2019

Baltimore’s bill for #ransomware: Over $18 million, so far | Ars Technica https://t.co/jCP8r5UUXo

— FRED MCCLIMANS (@fredmcclimans) June 5, 2019

It's been a month since Baltimore got hit with a ransomware attack, and while all city systems are open for business, many are in manual mode with physical paper needed to process payments like parking violations. Read the full story ➤ https://t.co/APTVMZscNx #ransomware #hack

— Avast Software (@avast_antivirus) June 5, 2019

Baltimore’s bill for ransomware: Over $18 million, so farhttps://t.co/9xCdNyPqYW

— Rantingly (@rantinglydotcom) June 5, 2019

altimore’s bill for ransomware: Over $18 million, so far @arstechnica #CyberSecurity #Security #DataBreach #Technology #Business#Ransomware #Malware #education #SmallBusiness #GDPR #CCPAhttps://t.co/WHFKGrExKE

— NetConnect (@NetConnectNYC) June 5, 2019