Table 5 Chare of municipalities that use different types of security systems, distributed by type of system, county and number of inhabitants. Per cent. 2003

5	Chare of municipalities that use different types of security systems, distributed by type of system, county and number of inhabitants. Per cent. 2003

	Uneruptable power supply	Keeping backup on other location than the operating area	Firewall	Subscription on virus protection software	Spam-filters¹	Intrusion detection software²	None of the system mentioned


Whole country	61.7	83.3	99.0	98.5	47.9	23.8	0.7
Municipalities, > 15000 inhabitants	72.6	95.2	100.0	98.4	51.6	32.3	0.0
Municipalities, < 15000 inhabitants	59.7	81.2	98.8	98.6	47.2	22.3	0.9
Østfold	77.8	88.9	100.0	100.0	27.8	38.9	.
Akershus	72.7	77.3	100.0	100.0	63.6	45.5	.
Oslo	100.0	100.0	100.0	100.0	100.0	100.0	.
Hedmark	66.7	76.2	100.0	100.0	47.6	19.0	.
Oppland	56.0	72.0	100.0	100.0	40.0	20.0	.
Buskerud	71.4	100.0	100.0	100.0	57.1	23.8	.
Vestfold	50.0	92.9	100.0	92.9	42.9	14.3	.
Telemark	50.0	94.4	94.4	94.4	44.4	16.7	.
Aust-Agder	75.0	75.0	100.0	91.7	66.7	33.3	.
Vest-Agder	40.0	86.7	100.0	100.0	53.3	26.7	6.7
Rogaland	59.3	88.9	96.3	100.0	33.3	14.8	.
Hordaland	74.1	92.6	100.0	100.0	37.0	22.2	.
Sogn og Fjordane	66.7	83.3	95.8	95.8	66.7	12.5	4.2
Møre og Romsdal	70.3	83.8	97.3	97.3	51.4	13.5	2.7
Sør-Trøndelag	62.5	87.5	100.0	100.0	66.7	29.2	.
Nord-Trøndelag	39.1	82.6	100.0	100.0	65.2	26.1	.
Nordland	43.2	64.9	100.0	97.3	35.1	29.7	.
Troms	56.5	82.6	100.0	100.0	30.4	21.7	.
Finnmark Finnmárku	83.3	83.3	100.0	100.0	44.4	27.8	.

¹	Filtration of received e-mails.
²	Software to detect and warn unwanted trafic.