It's been a tough couple of years for Okta (OKTA 1.11%) investors. After enduring the worst downturn in more than a decade, the cybersecurity specialist suffered a high-profile security breach in mid-2023. Growth slowed to a crawl, and confidence waned. However, Okta's quarterly results have vaulted the company back into Wall Street's good graces, and at least one analyst believes there's much more to come. A rare double upgrade In the wake of the company's impressive financial results, Bank of America upgr ...