How do they send you advertising with what you were looking for?
According to the report, which you can read here, Most corporate emails contain a so-called ‘spy pixel’, which works even if they are discarded as spam.
It is a very widespread marketing technique in which, practically imperceptibly, sand inserts a very small image file (.gif or .png), usually in the header.
This pixel allows to determine “if an email was opened and when it was, how many times it was opened, what device or devices were involved. the approximate physical location of the user, based on the address of their internet protocol (IP), in some cases it is possible to see which street the user is on ”, reveals the BBC report, which He went to an analysis firm for this type of messages to reach this conclusion.
Also read: Spotify would have created technology to ‘know’ user emotions
He adds that the information allows not only to measure the impact of a mass mailing campaign, but details of customer profiles. This, according to David Heinemeier Hansson, co-founder of Hey, the firm consulted by the BBC, it is “a grotesque invasion of privacy.”
Learn some recommendations to improve privacy and security on your cell phone
“The biggest problem is that many companies use it without their recipients knowing, and there is no warning about it. Nor is it like there is a banner saying ‘this email includes a spy pixel’ in most email programs“Hansson adds quoted by BBC.
Learn about the data that the most used applications collect from you
Even, says the expert, “these ‘spy pixels’ can lead to personalized monitoring. Particularly with salespeople or consultants, who may say, ‘I saw you opened my email yesterday, but you haven’t responded yet. I can call you?”