The ILOVEYOU virus, also known as Love Bug or Love Letter, caused massive destruction to computers worldwide. It persuaded unwary recipients to open email attachments that overwrote files while also sending copies to contacts in their address books.

Onel de Guzman of AMA Computer College created it as part of his undergraduate thesis project and would later express regret over its impact.


At a time when businesses rely more heavily on technology, understanding cyber threats is critical. A prominent example is the ILOVEYOU virus which spread swiftly worldwide during the early 2000s through email attachments masquerading as love confessions; once activated, this malware spread to everyone in its recipient’s email address book and caused massive data loss.

Onel de Guzman of Philippines designed and deployed the ILOVEYOU virus as part of his final thesis at AMA Computer College in Manila. De Guzman did not intend for it to cause irreparable destruction but instead wanted to gain access to Windows passwords and internet accounts stored on victims’ computers for further exploitation.

De Guzman was accused of creating the virus, yet due to lack of evidence and no cybercrime laws in the Philippines at the time, was never charged with creating or spreading it. He still lives there today and works at a mobile phone repair shop.


What is The First Computer Virus in the Philippines. ILOVEYOU was first created by Filipino computer programmer Onel de Guzman as his undergraduate thesis for his course at AMA Computer College. It quickly spread globally and left lasting damage, impacting cybersecurity practices and awareness practices across multiple industries.

On May 4, 2000, this virus began its rapid spread through email attachments that tricked recipients into opening them and downloading malware onto their computers. When opened, this program would collect passwords from victims before sending copies to all their contacts in Microsoft Outlook and overwriting files with copies of itself causing serious data loss for all those involved.

De Guzman was not prosecuted for creating the virus as the Philippines did not then have laws criminalizing computer hacking; however, his actions highlighted the need for laws that could prevent cyberattacks and hold those responsible accountable. As such, this incident led to passage of E-Commerce Act legislation, protecting digital economies across the nation against threats like malware attacks.


A virus is a piece of software designed to replicate itself by copying itself and infiltrating computers in order to damage, steal from, or disrupt data and computer functions. John von Neumann first theorized this concept back in the 1940s.

ILOVEYOU, more commonly known as the Love Bug or Letter Virus, was one of the first global viruses to strike and cause serious disruption for businesses and individuals worldwide. Furthermore, this outbreak demonstrated how malware could be misused for criminal gain.

When opened, this email attachment had the subject line of ILOVEYOU and would spread itself across Microsoft Outlook contacts lists before overwriting JPEG, MP3, and certain other files on recipients hard drives. Unfortunately for its creator, Onel de Guzman, there were no laws against cybercrime at the time.

The worm also helped raise cybersecurity awareness, leading to new legislation in the Philippines and global shifts in online safety practices.


Computer viruses are software programs designed to compromise computers. Once inside, they can cause extensive damage that ranges from deleting or renaming files, corrupting operating systems and replacing essential system files with inferior ones that slow down computers significantly.

The ILOVEYOU virus, popularly referred to as the Love Bug or Love Letter virus, first emerged on May 4, 2000 and quickly spread through email attachments, inflicting major damage upon computer systems worldwide and impacting over 50 million computers within 24 hours – one of the fastest spreading computer viruses ever.

Reonel Ramones and Onel de Guzman, two Filipino computer programmers, created the worm. Due to a lack of specific cybercrime laws at that time in the Philippines, no legal proceedings were ever filed against them for creating it; nevertheless, its presence raised global awareness of cybersecurity threats as well as prompting antivirus software companies to incorporate more robust cybersecurity features in their products.