## Materials and Methods
### Measures  
The scale developed by [PERSON], [PERSON], and [PERSON] (2016) was used to investigate the prevalence of cyberstalking. Respondents were asked if they experienced any behaviors that characterized a cyberstalking conduct: contact (\"Has anyone ever contacted you or attempted to contact you on more than one occasion online after you asked/told them to stop?\"), harassment (\"Has anyone ever harassed you or attempted to harass you online on more than one occasion?\"), unwanted sexual advances (\"Has anyone ever made unwanted sexual advances toward you on more than one occasion online?\"), threats of violence (\"Has anyone ever spoken to you in a violent manner or threatened to physically harm you on more than one occasion online?\") or identity fraud (\"Has anyone ever pretended to be you online, without your permission?\") (possible answers: yes/no). For each type of behavior, participants indicated the victim-perpetrator relationship (possible answers: intimate, friend/acquaintance, stranger).  
The questionnaire was adapted for use with an Italian audience by translating it from British English and then back-translating it ([PERSON] et al., 2018). The translation was performed by the authors and two research assistants, whose work was expected to match in order to agree on a final version. In addition, five items were added to the original scale to obtain the gender (if known) of the perpetrator and the duration and frequency of the behavior (possible answers: one or more times a day, more than three times a week, once a week, once a month, less than once a month). The questionnaire was already used in a previous investigation on cyberstalking in an Italian audience ([PERSON] et al., 2018).  
Regarding consequences and coping strategies, this measure was taken from the Italian version of the Questionnaire on Stalking [4]. In all, 12 items investigated physical symptoms resulting from the cyberstalking experience (e.g., weight change, appetite trouble, sleep disorders; yes/no answers) and 11 items investigated the emotional consequences (e.g., sadness, anger, confusion; yes/no answers). Victims of cyberstalking responded to one question regarding telling someone about their experience (\"did you tell someone about your experience?\"; yes/no answers). If the answer was yes, they responded to 7 items about people to whom they told their experience (police, parents/family, friends, partner, physician, psychotherapist, others; yes/no answers). Coping strategies were measured through 16 items (e.g., \"did you make any plan of action for escape?\" yes/no answers), while 7 items investigated their help-seeking (e.g., \"did you ask for help from the police?\" yes/no answers).  
To measure depression and anxiety symptoms, the shortened Beck Depression Inventory (BDI) [35; 36] and the State-Trait Anxiety Inventory (STAI) [37; 38], respectively, were used. The shortened version of the BDI consists of 13 items [39] that permit the classification of symptoms and attributes according to a level of gravity: none or minimal depression (scores 0-4), mild depression (5-7), moderate depression (8-15), or severe depression (>15) (in this study, [PERSON]'s \(\alpha\) was 0.82). The State-Trait Anxiety Inventory consists of two forms (STAIY1 and STAIY2; 20 items each) used to assess how participants feel \"right now\", at this moment, and how they feel most of the time (respectively, for state anxiety and trait anxiety). Total scores can range between 20 and 80, and 40 is the threshold value considered predictive of anxiety symptoms. The rating scale defines the level of severity as follows: from 40 to 50 is mild, 51 to 60 is moderate, and >60 is severe. [PERSON]'s \(\alpha\) values were 0.93 and 0.92, respectively.  
Participants were asked to provide some personal details, such as gender, age, education level, marital status, as well as time spent (and motives) on social networks.