The ransomware used for the cyber attack has prevented access to internal computer network, until a payment is made, sources add.
Following the cyber attack, SLT has shut down several of their data servers to ascertain whether their internal software has been affected.
The attack is said to have taken place after SLT employees were allowed to access the computer system from their homes, sources say.
Accordingly, SLT employees were notified not to access the computer system from last Saturday (23).
On the same day of the cyber attack, The Sri Lanka Computer Emergency Readiness Team (SLCERT) has issued a high level threat on a family of advanced Ransomware named Sodinokibi'.
SLCERT warned that this ransomware encrypts (makes files and folders unreadable) important files in various formats and demands a ransom to decrypt (make files and folders readable) them.
Following the cyber attack on SLT, consumers have been continuously complaining that their internet data has been burning out unusually quickly.
Access limitations - SLT
In a notice on their official website, the SLT notes that the prevailing internal system issues detected does not impact the SLT services offered their customers. However, they note that there 'may be some access limitations until internal systems problems are fully attended' to by system experts.
However, the SLT customer service hotlines 1212 and 0112121212 have also been disrupted over the weekend.
Consumers are unable to access customer services via th SLT website. According to the employees at SLT, they are even unable to activate computers due to the cyber attack.