I cannot access the site in Chrome and Mozilla. In internet Explore it is OK. It shows me "Security error->The site ahead contains malware". When I try to open it. The site is melvinflex.com. Is there any way how to solve this by not upgrade it to any other version because I have some bad experience with magento in version upgrades.Thank you.
Scan your site on
magereport.com to identify any missing security patches and to determine if it has been infected with known malware strains.
You can install all missing patches and test store functionality in a non-production environment.
Remove any suspicious script added via backend.
However I recommend you to upgrade magento to its latest version which will include all the patches implemented.