US presidential candidate Joe Biden speaks an event. File photo
"The Russians are still engaged in trying to delegitimize our electoral process. Fact," the presumptive Democratic challenger said at a fundraiser on Friday according to the "Washington Post".
"China and others are engaged as well in activities that are designed for us to lose confidence in the outcome," he added.
It is normal for presidential nominees of the major parties to have intelligence briefings, though it is not clear when Biden started to receive his.
On June 30 he said he may ask for a briefing, but that he had not been offered one up until then.
Security officials warned at the end of last year foreign adversaries would attempt to interfere in the 2020 elections, to "undermine our democratic institutions, influence public sentiment and affect government policies."
US intelligence found that Russia intervened in the 2016 elections to support Donald Trump, who has bristled at the charges and called for better ties with Putin.Agence France-Presse
In what would be the day's biggest upset, Biden was projected by Edison Research to have won Texas, the biggest prize after California. Sanders invested heavily in Texas and was counting on its sizeable Latino population to propel him to victory.
Today, they appear online as lonely candidates hunkered down in their homes, forced off the trail and into campaign reinvention mode as the intensifying coronavirus pandemic upends the Democratic presidential primaries along with every other aspect of American life.
Barring unforeseen disaster, Joe Biden will represent the Democratic Party against President Donald Trump this fall, the former vice president's place on the general election ballot cemented by Bernie Sanders' decision to end his campaign.
The European Medicines Agency (EMA) said based on its review of results of a study by UK researchers, it concluded that dexamethasone - a commonly used drug against a range of inflammatory conditions - can be considered a treatment option in adults and adolescents needing oxygen therapy.
Taiwan scrambled fighter jets on Friday as 18 Chinese aircraft buzzed the island, including crossing the sensitive mid-line of the Taiwan Strait, in an escalation of tensions as a senior US official held talks in Taipei.
Two Turkish soldiers were killed and another was wounded after Kurdish militants fired rockets at a military base in northern Iraq, Turkey's Defence Ministry said in a statement on Friday.