Double-sided arrows suddenly flying across screen
All of a sudden I have double-sided arrows in a circle flying across my screen, on occasion unasked for downloads are appearing - how can I stop this please?
iMac 27″ 5K, macOS 11.2
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Uninstall all third party apps that are Cleaners/Optimizers/Anti-Virus/VPN
To get a good look at your System config. and reveal conflicts or issues, you can download/run this trusted utility https://etrecheck.com
If you need help interpreting the report you can post it here in its entirety in the "Additional Text" box in the editing toolbar below, in your reply. This will also help identify and remove malware
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Further if no resolve—If you suspect you have installed adware/malware:
>System Preferences>Profiles click into it and then remove all the suspicious things from the list. (This Preference pane will not be present if no profiles found.)
also Verify you are not using SOCKS proxy:
>System Preferences>Networks>Advanced>Proxy uncheck the box
Adware/malware launch daemons can set SOCKS proxies without user participation.
(SOCKS is an Internet protocol that exchanges network packets between a client and server through a proxy server.)
Adware Removal Guide—Manual removal of : http://www.thesafemac.com/arg-identification/
or
Try running this trusted utility https://www.malwarebytes.com/mac/
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To add— if you have adequate backups you can simply restore prior to when the issue started for you:
Restore your Mac from a backup
https://support.apple.com/en-us/HT203981