Emergency
Although crime is rarely violent, beware of pickpockets and don't flash your valuables or wear a bum bag/fanny pack. Street kids, taxi drivers, and others may harass tourists. They will usually desist after a stern "La!" or two. Or you can say "la shukran!" no thanks or "emshi" go!.
Alexandria is a conservative city, so women should cover their shoulders, midriffs, cleavage and legs. Even still, women can expect to be heckled or harassed in the street, especially if walking alone. The best response is to ignore the offender and pretend you don't hear anything. Cover your head when entering places of worship.