According to an investigative report by Korean outlet JBTC, KT—formerly known as Korea Telecom—took extreme measures to combat torrenting. Despite a decrease in filesharing traffic over the years, torrenting remains popular in South Korea, particularly through Web Hard Drive services (Webhard). These services use the BitTorrent-enabled ‘Grid System’ to keep files available, leading to significant bandwidth usage that caught the attention of ISPs like KT.
KT, one of the largest ISPs in South Korea, had previously been involved in a court case in 2020 over throttling user traffic, citing network management costs.
The court ruled in KT’s favor, but new reports indicate the company went beyond merely slowing downloads. Users of Webhard services began experiencing unexplainable errors and service outages around four years ago, all of whom were KT subscribers. JBTC’s investigation uncovered that KT had installed malware on these users’ computers, causing these disruptions.
A dedicated team at KT, consisting of sections for malware development, distribution and operation, and wiretapping, allegedly planted malware to eavesdrop on subscribers and interfere with their file transfers. This malware not only limited torrent traffic but also allowed the ISP to access and alter data on users’ computers, raising serious legal and ethical concerns.
The Gyeonggi Southern District Police Office, after conducting a search and seizure of KT’s data center and headquarters, believes the company may have violated the Communications Secrets Protection Act and the Information and Communications Network Act. In November last year, police identified 13 people of interest, including KT employees and employees of partner companies.
The investigation is ongoing, with a supplementary probe continuing since last month.
KT’s actions, ostensibly aimed at reducing network management costs, now appear likely to result in significant legal repercussions and potential financial losses. This case highlights the need for stricter regulatory oversight and transparency in ISP practices to protect consumer privacy and maintain trust.
