A recent data breach of a third-party marketing vendor that exposed information of 9 million AT&T customers highlights the telecommunications sector's vulnerability to cyberattacks, Axios reports. Palo Alto Networks' Unit 42 research lab Chief Technology Officer Michael Sikorski noted a major increase in telecom attacks, saying, "They tend to have pretty large security budgets, but if you think about how much outsourcing those entities are doing, it's significant." 
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