What happened Shares of BlackBerry (NYSE: BB) jumped 12.3% last month, according to data provided by S&P Global Market Intelligence, after the company announced that two of its products had passed security tests. The technology company has become a so-called "meme stock" this year as some investors were drawn to its beaten-down share price and bought up shares, hoping for a massive rebound of the stock. So what BlackBerry said in a press release on Aug. 24 that two of its products -- BlackBerry Protect and BlackBerry Optics -- had undergone "a range of hacking real-world attacks designed to compromise systems and penetrate target networks," and both passed with flying colors. Image source: Getty Images. BlackBerry Protect is the company's AI-driven endpoint protection product; BlackBerry Optics is its endpoint detection and response product. BlackBerry said the tests were conducted by SE Labs and that its two products were "able to provide complete prevention, complete detection, and zero false positive results, earning SE Lab's maximum AAA rating for its excellent performance." While it's important for BlackBerry to show that its products are safe, the reaction by inventors might have been an exaggeration. Investors of meme stocks tend to get very excited about small bits of good news, and it appears that BlackBerry's August price jump was an example of exactly that. Now what BlackBerry does have a more solid business than some meme stocks and is currently working with Amazon to create a cloud-connected software platform for automakers, called IVY. But with the company's shares seemingly being bought and sold by some meme stock investors, it means long-term investors might need to be more cautious about BlackBerry right now. 10 stocks we like better than BlackBerryWhen our award-winning analyst team has a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* They just revealed what they believe are the ten best stocks for investors to buy right now... and BlackBerry wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of August 9, 2021 John Mackey, CEO of Whole Foods Market, an Amazon subsidiary, is a member of The Motley Fool's board of directors. Chris Neiger has no position in any of the stocks mentioned. The Motley Fool owns shares of and recommends Amazon. The Motley Fool recommends BlackBerry and recommends the following options: long January 2022 $1,920 calls on Amazon and short January 2022 $1,940 calls on Amazon. The Motley Fool has a disclosure policy.Source