Twitter reported 186 million daily users for the period ended June 30, a 34% jump over the quarter a year earlier, and its largest year-over-year increase since first reporting the metric in 2016. Users jumped 24% in the first quarter, a record at that time. Shares gained about 3% as the market opened.

But second-quarter sales declined 19% to $683.4 million compared with a year earlier, the San Francisco-based social-media company said Thursday in a statement. Analysts, on average, projected $704.6 million, according to data compiled by Bloomberg.

The company said it’s exploring additional business lines, including a possible subscription offering, as a way to supplement advertising, which makes up more than 82% of total revenue.

Twitter also acknowledged a high-profile hack of its service earlier this month, calling the incident “disappointing” and saying it’s “working with law enforcement as they conduct their investigations.” Hackers used phishing techniques against company employees to gain access to at least 130 accounts, including for some famous users such as Joe Biden, Jeff Bezos and Elon Musk, and sent tweets asking for Bitcoin.

“We understand our responsibilities and are committed to earning the trust of all of our stakeholders with our every action, including how we address this security issue,” Twitter Chief Executive Officer Jack Dorsey said in the statement and in a letter to shareholders. He opened a call with analysts by personally apologizing.

Twitter added 20 million new daily users over the quarter. The growth was “primarily driven by external factors, such as continued shelter-in-place requirements for many people, and increased global conversation around the Covid-19 pandemic and other current events,” the company said in the letter to shareholders.

Despite the increase in users, Twitter said advertising revenue fell 23%, including 25% in the U.S., with many companies pulling back on spending given the global pandemic. The company also saw a drop from late May to mid-June “when many brands slowed or paused spend in reaction to U.S civil unrest.”

Twitter’s stock has gained 15% to $36.94 this year, bouncing back from a low of $22 in March.

Twitter didn’t give a forecast for the third quarter or share any advertising updates for July. Thousands of advertisers have cut or lowered spending on Facebook Inc. to protest hate speech on the platform and the company’s content policies. Many buyers have extended those cutbacks to all social media.

Twitter executives dodged a number of questions from analysts about the impact of the boycott on the company’s business. “We’re here to talk about Q2 so I’ll focus on what we saw in the last quarter,” Chief Financial Officer Ned Segal said when asked about July advertising trends. He said ad revenue was down 15% over the last three weeks of June, better than the 27% decline the company saw in the last three weeks of March at the beginning of the pandemic.

Segal also said Twitter is optimistic that ad growth will continue to improve given the return of events like live sports, which typically drive consumers to the service. Major League Baseball starts its shortened season on Thursday, and the National Basketball Association is also set to resume this month.

Snap Inc. earlier this week reported better-than-expected revenue for the quarter, but warned its advertising business could be hurt by the economic effects of the virus moving forward. Analysts project Facebook’s revenue will increase just 2% year over year when it reports earnings next week, compared to about 18% growth in the first quarter.

Twitter said its effort to find “additional potential revenue product opportunities” is in the early stages. “We do not expect any revenue attributable to these opportunities in 2020, you may see tests or hear us talk more about them as our work progresses,” the company said in the letter.

“These are really just ideas right now,” Segal said, adding that Twitter is thinking about commerce and subscriptions for people who use the service.

Dorsey said the company is also considering a business related to “managing paywalls” — and that it will likely test some of these business lines later this year. Any subscription would need to “complement” Twitter’s advertising business, Dorsey said. “We have a really high bar for when we would ask consumers to pay for aspects of Twitter,” he added. “We are in the very, very early phases of exploring.”

Twitter reported a net loss of $1.2 billion in the quarter, though credits most of that loss to a $1.1 billion deferred tax asset allowance. Excluding that tax expense, Twitter said its adjusted loss was $127 million, or 16 cents a share. Analysts, on average, estimated a loss of 1 cent.