The battle between Delta Air Lines and CrowdStrike has escalated after both companies filed competing lawsuits against each other over the summer's tech outage and flight cancellations.

The lawsuits formalize a fight that had already been building in public statements and letters issued by the companies' lawyers and executives.

Key Takeaways CrowdStrike shares could be in the spotlight after Delta filed a lawsuit against the cybersecurity provider following a faulty software update in July that caused mass flight cancellations.