Questions

Firewalls are used to protect against Unauthorized Access.

You will get the answer in the riddle itself, if you read the riddle carefully.

The riddle says "A cowboy arrives in town on Friday." So Friday is the name of the horse on which he comes. Hence, the only possibility is he arrives on the horse friday on Tuesday, stays for 3 days and leaves on the same horse on Friday. 

Minnesota

The Moortidevi Award is an annual literary award in India presented by the Bharatiya Jnanpith organization for a work which emphasizes Indian philosophy and culture. In 2003, the prize included an amount of Rs. 1 lakh (US$1,500), a plaque, a statue of Saraswati, and a shawl. The cash prize was raised to Rs. 2 lakh (US$3,000) in the year 2011 and to Rs.4 lakh (US$5,900) in the year 2013.L

Nokia and Airtel along with state-owned network BSNL (Bharat Sanchar Nigam Ltd) have announced that they have partnered to set up 5G internet speed in India to introduce a fast internet ecosystem in the country.

In word, the mailing list is known as the Data source.