There's a stark difference between the company's recent performance and its anticipated future.Investors in cybersecurity company Zscaler (ZS 3.26%) probably weren't feeling too secure over the past few days. According to data compiled by S&P Global Market Intelligence, Zscaler's stock was down by almost 19% week to date as of late Thursday evening. An uninspiring quarterly earnings report, accompanied by analyst price target cuts and even a downgrade, was largely to blame.Trailing success, looming disappoi ...