Problem: In 2013 and 2014, a Russian/Ukrainian hacking ring known as "Rescator" broke into Target Corporation computers in 2013, stealing roughly 40 million credit cards, and then Home Depot computers in 2014, stealing between 53 and 56 million credit card numbers. Warnings were delivered at both corporations, but ignored; physical security breaches using self checkout machines are believed to have played a large role. "The malware utilized is absolutely unsophisticated and uninteresting," says Jim Walter, director of threat intelligence operations at security technology company McAfee meaning that the heists could have easily been stopped by existing antivirus software had administrators responded to the warnings. The size of the thefts has resulted in major attention from state and Federal United States authorities and the investigation is ongoing.
Who is Jim Walter?
The answer is the following: director of threat intelligence operations at security technology company McAfee

Problem: In order to explain the common features shared by Sanskrit and other Indo-European languages, many scholars have proposed the Indo-Aryan migration theory, asserting that the original speakers of what became Sanskrit arrived in what is now India and Pakistan from the north-west some time during the early second millennium BCE. Evidence for such a theory includes the close relationship between the Indo-Iranian tongues and the Baltic and Slavic languages, vocabulary exchange with the non-Indo-European Uralic languages, and the nature of the attested Indo-European words for flora and fauna.
When is it thought that early speakers of Sanskrit came to India?
The answer is the following: early second millennium BCE

Problem: Valencia's port is the biggest on the Mediterranean western coast, the first of Spain in container traffic as of 2008 and the second of Spain in total traffic, handling 20% of Spain's exports. The main exports are foodstuffs and beverages. Other exports include oranges, furniture, ceramic tiles, fans, textiles and iron products. Valencia's manufacturing sector focuses on metallurgy, chemicals, textiles, shipbuilding and brewing. Small and medium-sized industries are an important part of the local economy, and before the current crisis unemployment was lower than the Spanish average.
Valencia has the largest port on which coast?
The answer is the following: Mediterranean western coast

Problem: Hydrogen gas was first artificially produced in the early 16th century, via the mixing of metals with acids. In 176681, Henry Cavendish was the first to recognize that hydrogen gas was a discrete substance, and that it produces water when burned, a property which later gave it its name: in Greek, hydrogen means "water-former".
When was hydrogen gas artificially produced for the first time?
The answer is the following:
early 16th century