Sophisticated hackers infiltrated United Nations (UN) networks in Geneva and Vienna last year in an apparent espionage operation that UN top officials did not disclose. 

According to The Associated Press, the hackers’ identity and the extent of the data they obtained are not known. The documents, obtained by The New Humanitarian (TNH), revealed that dozens of UN servers – including systems at its human rights offices, as well as its human resources department – were compromised and some administrator accounts breached. The breach is one of the largest ever known to have affected the world body, says TNH.