"Attention to detail breeds good security," according to business security specialist Furlishous Wyatt Jr. of San Francisco SAFE Inc., a nonprofit program that provides security consultation services to businesses and organizations.

He advised attendees at the Anti-Defamation League's security conference Tuesday to employ "a healthy mixture" of devices and personnel to enhance security.

Among Wyatt's recommendations:

*Lighting should be directed toward the building from outside, if possible, in a crossing pattern. But lighting from inside is better than nothing.

*Fences should be see-through and at least 8 feet high. A solid fence may work to an intruder's advantage; he or she can scale it and hide on the other side.

*The doors of fire exits and stairwells should be locked (on the inside). Wyatt spoke disdainfully of the practice of propping a stairwell door open so that someone can smoke a cigarette. "Remember that the convenience of one can lead to the detriment of many when dealing with security," he said.

*Single-cylinder locks that require no key from the inside should not be used on doors with a nearby glass panel, which an intruder could break and then reach in to turn the lock.

*Organizations that expect to get threats should use caller ID units to track the origin of phone calls.

*Receptionists should immediately acknowledge every visitor, even if busy with others.

*Shrubbery should be thinned at the bottom so that the feet of a person standing behind it are visible.

*Synagogues should train ushers carefully and should employ unarmed security guards or information personnel to monitor those coming and going at services.

*Renters should take their "fair share of responsibility" for security, rather than relying entirely on landlords.