I am aware that computers are vulnerable to third parties gaining access for one reason or another and we know that criminals have the ability to spy on our activities, such as reporting bank passwords back to the criminals. We let them in by ‘opening the door’ through inadvertently allowing their 'spyware' to be installed.
Today however I have investigated another aspect, less serious but still very irritating. I visited an online plumbing website the other day to see what sink taps were available and so these visits to that web visit were recorded in my Mac history. This is a useful feature should I wish to revisit the same site. My problem is that the feature was then abused by Victoria Plumb in that subsequent visits to several other websites that carry advertising panels featured Victoria Plumb adverts, even though these other websites had nothing whatsoever to do with plumbing. One was Flightradar which displayed one of their adverts.
In my view it is unacceptable that my browsing history on my own PC should be accessed by third parties so that they can cause their adverts to appear, unbidden, on my computer screen. I proved that this was how they were appearing by deleting the browsing history for Victoria Plumb and magically the adverts disappeared immediately thereafter.
Comedian Hugh Dennis tells the story about how he bought a hose pipe for his garden only to be bombarded for weeks after with emails about hose pipes. Is that reasonable or acceptable?
The fact of the matter is that our privacy is invaded constantly for commercial reasons, and probably for other reasons too for all I know, and I think it should be outlawed. For my part I have blacklisted Victoria Plumb as a result of their unwelcome invasion of my Mac and I won't use them as a matter of principle.