The phrase "are deleted by a" is correct and usable in written English.
It can be used in contexts where you are describing an action that involves the removal of something by a specific agent or entity.
Example: "The files are deleted by a system administrator to maintain data security."
Alternatives: "are removed by a" or "are erased by a".
For deletion of putative target genes, the open reading frame was deleted by a PCR stitching method as described in detail in Kwon et al. (2012).
The spokesman, Barry Schnitt, said that when a photograph was deleted by a user, it was removed from all of the company's servers within 90 days.
In a public letter to the Federal Trade Commission in January, Adobe condemned the practice of restoring cookies after they had been deleted by a user.
4.17pm: It has emerged that a key June 2008 email from then News of the World editor Colin Myler to James Murdoch was deleted by a member of News International's IT department in January 2011 and not recovered until the end of last year.
"The evidence strongly indicates that Ms White believes her breasts were twice clasped by a police officer, that she took photographs of the police officer she suspected of indecently assaulting her; the photographs were deleted by a police officer before the phone was returned to Ms White," Bradd said.
John Romano of the specialist news site The Digital Beyond told how the family of one soldier killed in Iraq were refused access to his emails by Yahoo, how one author's entire online body of work was deleted by a family who did not like it, and how one man struggled to wrest control of his dead wife's Facebook page from abusive commenters.
A huge amount of Megaupload data has been deleted by a European hosting firm, founder Kim Dotcom has revealed.
Criticisms regarding the security of its voting machines were deleted by a user at its IP address.
That is, you're able to see how fast a tweet has been deleted by a politician or candidate, as well as track other metrics, like what and when politicians delete the most tweets or even which party is responsible for more deletions.
During the investigation, Wilhelm believes that his account was deleted by a Flickr staffer, a mistake he says Flickr confirmed via email.
