The company's name was listed on the Maze site on the dark web and then removed, always an indication that a company has yielded to ransom demands and paid up.
iTWire contacted Collabera on Tuesday, but only received a stock reply that said: "Thanks for contacting us! We have received your request and will contact you shortly. In the meantime, we encourage you to follow us on Instagram, Facebook, Twitter and Linkedin to stay on top of what's new."
Collabera has more than 70 offices globally, according to information on its website. It has operations in the US, Canada, the UK, Australia, Ireland, Poland, India, Malaysia, the Philippines and Singapore.
The Collabera leak listed on the Maze website. Supplied
That does not seem to extend to responding to media queries.
In an internal email reported by the British website, The Register, Collabera was quoted as telling its staff that it had "promptly restored access to our backup files and immediately launched an investigation to determine the nature and scope of the event".
This could indicate the company paid only to prevent publishing and to get its name off the Maze leak site to prevent news of the infiltration spreading. This also means that the company is unlikely to be aware of what information was stolen by the Maze attackers, apart from the one zipped file that was posted online.
Contacted for comment, iTWire's regular commentator Brett Callow said: "Companies that have data exfiltrated are without any good option. Whether they pay the ransom or not, they've been breached. Payment will simply get them a pinky promise that the stolen data will be destroyed - and that pinky promise will be coming from a totally untrustworthy criminal extortionist.
"And why would criminals ever destroy data that they may be able to use or further monetise at a later date? The answer is that they probably wouldn't.
"These incidents are happening far too frequently. Companies need to do more to protect the data that is entrusted to them. They also need to stop paying the criminals. Ransomware is a problem for one reason and one reason only: companies keep on paying. If they stop, the problem will go away," added Callow who works as a ransomware threat researcher with the New Zealand-headquartered security firm Emsisoft.