Twitter confirms a small number of employees were targeted in a phone spear-phishing attack. The company says it has “significantly limited” access to its internal tools and systems. The attack took place earlier this month and involved the takeover of several high-profile Twitter accounts. Twitter says it may be slower in response to account support needs, reported tweets, and applications to its developer platform. It also says it’s taking steps to improve account and employee security in the wake of the attack.”]