Yes, if you are concerned Crowcom has a list of Antivirus apps for your phone
http://securitydroid.crowcom.net Has a list of top free and pro Antivirus apps for your Android if that's what you have.
Sadly u can't but u can only have 1 :( It is not advised. The antivirus programs have a lookup list of sample threats. A second antivirus program could pick up these samples and give false alarms and/or get confused and take longer to scan.
Rising Antivirus
No. Only those known to the antivirus producers.
Yes- if you are concerned, Crowcom has a list of Antivirus apps for your phone.
The website PCmag.com, which is specialised in criticism of computer-related activities listed the best antivirus of 2013. On their list, three products share the top spot, which are Bitdefender antivirus 2013, Norton antivirus 2013 and Webroot SecureAnywhere antivirus 2013.
AVG Antivirus, kaspersky, McAfee, Symantec Norton Antivirus, Microsoft Security, Essentials, Sophos, F-Prot, Avast!
avg
advanced setup -> web access -> https -> address management -> add domain name to list of excluded from filter using * (eg *www.domain.com*)
avira avg karpesky http://guides4internet.blogspot.com/ for free downloads
To unblock a program in Kaspersky endpoint security 8 antivirus, first go into the settings. Then security and make sure that tor is not on the blocked list. If it is remove it from the list and add it to allowed programs and sites.