<img width="600" height="286" data-tf-not-load src="https://dayintechhistory.com/wp-content/uploads/2013/08/virusscan1.jpg" class="attachment-full size-full wp-post-image" alt="Virus" decoding="async" srcset="https://dayintechhistory.com/wp-content/uploads/2013/08/virusscan1.jpg 600w, https://dayintechhistory.com/wp-content/uploads/2013/08/virusscan1-300x143.jpg 300w, https://dayintechhistory.com/wp-content/uploads/2013/08/virusscan1-104x50.jpg 104w, https://dayintechhistory.com/wp-content/uploads/2013/08/virusscan1-106x51.jpg 106w" sizes="(max-width: 600px) 100vw, 600px" />

August 19, 2003: The Sobig.F virus was first discovered on this day. 24 hours later, it took down many a network by sending out emails with subjects like – “Re: Approved,” “Re: Details,” “Re: Re: My details,” “Re: Thank you!,” “Re: That movie,” “Re: Wicked screensaver,” “Re: Your application,” “Thank you!,” or “Your details.”The first version was found in January of 2003. The Sobig.F was the most destructive.

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