Daily Crunch 7/11/19

Welcome to TechCrunch daily news, a round up of the top tech news of the day. Brought to you by MD Anderson Cancer Center – where a team of nearly 21,000 strong are researching, innovating, and working to end cancer. Learn more about the leader in cancer care at MakingCancerHistory.com. --A security vulnerability prompts Apple to disable the Walkie Talkie app --Amazon says it will invest $700 million to retrain its workforce --and an apartment rental startup raises $225 million.

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