@katyblessings I would stick with a name-brand, well-known free AV (Avast, AVG, Bitdefender, Kaspersky Mobile, Norton, Sophos, Trend Micro, etc) to minimize the potential for scams and malicious exploitation. You can use an online search engine to check user and trade-magazine reviews of these kinds of AVs. I'm not sure how many of these might also utilize some of the high-risk permissions noted in your research link, but at least the companies involved have fairly well-established reputations and are not likely to delve into 'scammy' kinds of activities.
The "moment of truth" will probably start to appear in 2020 as manifest V3 goes "live" in Chrome generic distribution. Then we'll start to see whether/if the ripples spread into non-Chrome chromium (and thereafter potentially impact other chromium-based browsers).
Per https://www.bleepingcomputer.com/news/software/google-begins-testing-extension-manifest-v3-in-chrome-canary/ , 1 November 2019: "While they are now in preview, Google expects the manifest v3 to go live in 2020 with the v2 end of life to be determined in the future."
@sgunhouse I made disable IR camera drivers from devices settings menu in windows. normal camera driver is active only. I made disable virus protection for camera in settings ESET. and I let to opera for opening only usb2.0 HD IR UVC webcam camera.
I said to windows HELLO, goodby. bUT opera and camera now working.
Yes at least one other guy has the Login, or at least another Login to the page. Could this matter?
I can resolve this thread though - i created a webmaster account on the yandex-platform. It's indexed and checked by them now, so everything fine now..
@leocg he knows there are differences, he specifically wants to know what they are. what is their defining characteristics you refer to, and what is the specific "public" that each caters to that you reference.
@shielaaston Chromium is essentially the rendering engine that underlies all chromium-based browsers (Opera, Chromium, Vivaldi, the new Edge, and a Google-customized chromium variant used in Chrome). All these browsers apply their own-designed user interfaces on top of the chromium engine. Depending on the flavor of browser and its design philosophy, the user interface of a given browser may or may not differ a lot visually and functionally from Chrome. Some Chrome features may not appear in Opera or other chromium-based browsers because of Google's Chrome customization. At the same time, many of the functional elements of Chrome do exist in the other chromium-based browsers because of the largely-shared rendering engine.
Opera and its sync functionality are as secure as any other chromium-based browser, particularly since Opera makes an effort to keep as current as possible with chromium engine security updates. I'm not personally a sync user nor a Google docs user, so somebody else will have to address those questions.