Eyewear designer startup Warby Parker has joined Facebook, Marriott and an ongoing roster of other companies in feeling the sting of a hacker. According to reports, the company sent out an email last week to customers notifying them that approximately 198,000 accounts had been targeted in an attack using stolen user names and passwords acquired from breaches at other companies.

Most young startups typically don’t have the resources of a massive global hotel chain to fall back on, making a single breach a potentially fatal occurrence. And if you think surviving a cyberattack on a tight budget is tough, try planning for one.