Police robots, drones and electronic car systems are at the mercy of hackers at the first DEF CON convention in Singapore.

In front of a gathering of farmers, ranchers and growers at the White House, President Trump and EPA announced new guidance that will remove the DEF sensor requirements, which the Small Business ...

The U.S. Environmental Protection Agency is urging truck and engine makers to adjust diesel exhaust fluid (DEF) software to prevent severe power restrictions caused by DEF system faults. Current ...

TravelCenters of America’s DEF dispensers, which it calls the “DEF+1,” pump both diesel fuel and DEF and are available at nearly all locations. Drivers can authorize diesel and DEF transactions at the ...